4066 . A certain bakery ran a promoion: a customer can but x donuts for the regular price of Tk.15 total and get 3 donuts free. If the donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen, what is the value of x?

A. 15
B. 18
C. 21
D. 25

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Answer: Option A

Explanation:

Let's break down the information provided:

During the promotion, a customer can buy x donuts for the regular price of Tk. 15 and get 3 donuts free.
The donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen.
Let's denote the normal price per dozen as "P" (in Tk).

So, during the promotion:

Price for x donuts (including 3 free donuts) = Tk. 15
Price per dozen during the promotion = P - 2 Tk
Now, let's set up the equation for the price of x donuts during the promotion:

(x + 3) * (P - 2) = 15

Now, we need to find the value of x. We know that P is the price per dozen during the normal period.

To solve for x, we'll first express P in terms of x:

P = (15 / (x + 3)) + 2

Now, we need to find a value of x for which P is a multiple of 5 (to make the total price of x donuts equal to Tk. 15). We'll try different values of x:

If x = 15: P = (15 / (15 + 3)) + 2 = 1 + 2 = 3 The total price for 15 donuts (including 3 free) at Tk. 3 per dozen would be Tk. 15.
So, the value of x is indeed 15, and this satisfies the condition of the promotion.

Therefore, x = 15.

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সিজিডিএফ | অডিটর 21-01-2022

A. 8.1
B. 7.9
C. 9.3
D. 9.1
E. 8.5

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Answer: Option E

Explanation:

After tune - up, the car travels (117% of 17 miles ≈ 20 miles) in one litre petrol.

Therefore, petrol required for 170 miles = 170/20 = 8.5 litre.

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Bangladesh Bank - Assistant Director - 2011

A. 13.33
B. 16.67
C. 10.6
D. 15
E. None of these

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Answer: Option D

Explanation:

A car goes 15 km with a gallon of octane at 50 km/hr.

Again,

If travels with 60 km/hr, it goes 80% far as that of before. i.e.

D = 80%×15 = 12 km.

Now,

According to question, if 100 km is travelled in 50 km/hr and another 100 km in 60 km/hr then,

In 50 km/hr: 1 gallon = 15 km

In 60 km/hr: 1 gallon = 12 km

Hence,

Total required gallons of octane is;

100/15 + 100/12

= 15 gallons.

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4069 . A cake weighting 750 gram has three ingredients: flour, sugar and fruits. There is twice as much as flour as sugar and one and a half times as much as sugar as fruits. What is the quantity of sugar(in grams) in the cake?

A. 125 gm
B. 50 gm
C. 100 gm
D. 250 gm
E. None

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Answer: Option E

Explanation:

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4070 . A box contains 5 pink , 3 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

A. 3/4
B. 2/8
C. 4/3
D. 2/3

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Answer: Option D

Explanation:

5 টি pimk, 3 টি green ও 2 টি yellow সহ মোট বলের সংখ্যা 10 টি।

নির্বিআারে 3 টি বল তোলা বলটি green না হওয়ার সম্ভাবনা = (5 + 2) C3 / 10C3 = 7C3/10 C3

= ( 7! / 3! 4!) / ( 10! / 3! 7!)

= 7!/ 3! 4! × 3! 7!/10!

= 7 × 6 × 5 / 10 × 9 × 8

= 7/24

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 360
B. 540
C. 500
D. 486
E. None of these

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Answer: Option A

Explanation:

At 30% discount, marked down price = 70% of 900 = 630 BDT.

Another 10% discount on marked price = 10% of 900 = 90 BDT

Final sale = 630 - 90 = 540 BDT.

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4072 . A bonus of Tk.25000 will be distributed among three salespersons in proportion of the amounts by which there sales exceed the basic quota of Tk.200000. Mrs. Asha sold Tk.600000. Mr. Bashir sold Tk.450000 and Mr. Saif sold Tk,300000. How much did Mr. Saif receive from this bonus?

A. Tk.3333.33
B. Tk.6666.67
C. Tk.5555.56
D. Tk.4444.44
E. None of these

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Answer: Option A

Explanation:

Their sales exceeded the basic quota of TK 200000 by 400000, 250000 and 100000 respectively.

So, Mr. Saif will receive a bonus amount = {100000/(400000 + 250000 + 100000)}x25000 = 3333.33 TK.

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4073 . A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .

A. 2 hrs
B. 4hrs
C. 4 hrs
D. 9 hrs

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Answer: Option B

Explanation:

Speed downstream = (10 + 3) km/hr = 13 km/hr
Time taken to travel 52 km downstream = 52/13 hours = 4 hours

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Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 17 mph
B. 15 mph
C. 12mph
D. 9 mph
E. 4 mph

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Answer: Option B

Explanation:

We know,

60 minutes = 1 hour

Or, 1 minutes = 1/60 hour

Or, 180 minutes = 180/60 hour

= 3 hours

Here, Times (t) = 3 hours;

Distance (s) = 45 miles

And Velocity (v) = ? Mph

Again, we know that,

S = vt

= > v = s/t

= > v = (45÷3) mph

= > v = 15 mph

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Bangladesh Bank - Assistant Director - 2013 ||

A. 36
B. 48
C. 24
D. 31

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Answer: Option A

Explanation:

Average of 12 innings = x
According to the question:
(12x + 96)/13 = x + 5
x = 96 - 65 = 31.
Average in 13 innings = 31 + 5 = 36 Ans: A .

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Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

A. 5
B. 10
C. 15
D. 100

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Answer: Option A

Explanation:

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Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

A. 2 dozen
B. 4 dozen
C. 5 dozen
D. 8 dozen

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Answer: Option B

Explanation:

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4078 . A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how many coins of each type are there?

A. 20
B. 15
C. 18
D. 22

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Answer: Option A

Explanation:

Let X coins of each type of there
Total Value = Tk. 35
Now,
X + X/2 + X/4 = 35
4X + 2X + X = 140
7X = 140
X = 20

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 7/19
B. 9/19
C. 10/19
D. 11/19

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Answer: Option C

Explanation:

মোট ১৯ টার ভেতর ৯টি হলুদ বলসহ মোট ১০টি বল তুললে তবেই নিশ্চিত একটি লাল অথবা কালো বল উঠবে।

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 36 days
B. 24 days
C. 16 days
D. 17 days

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Answer: Option B

Explanation:

shortcut - (18*12)/(18 - 12)

= 36

as 2/3 work then = (36*2)/3

= 24 days

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

4066 . A certain bakery ran a promoion: a customer can but x donuts for the regular price of Tk.15 total and get 3 donuts free. If the donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen, what is the value of x?

4067 . A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

4069 . A cake weighting 750 gram has three ingredients: flour, sugar and fruits. There is twice as much as flour as sugar and one and a half times as much as sugar as fruits. What is the quantity of sugar(in grams) in the cake?

4070 . A box contains 5 pink , 3 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

4071 . A book is originally price at BDT 900, but marked down by 30%. Again when the actual sales occurs a discount of 10% is offered on the marked price, what is the final sales price in BDT?

4072 . A bonus of Tk.25000 will be distributed among three salespersons in proportion of the amounts by which there sales exceed the basic quota of Tk.200000. Mrs. Asha sold Tk.600000. Mr. Bashir sold Tk.450000 and Mr. Saif sold Tk,300000. How much did Mr. Saif receive from this bonus?

4073 . A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .

4074 . A biker rode 45 miles in 180 minutes. What ws his speed (mph) during this ride ?

4075 . A batsman has a certain average of runs for 12 innings. In the 13th inning, he scores 96 runs thereby increasing his average by 5 runs. what is his average after the 13 innings ?

4076 . A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost ?

4077 . A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rools were sold by noon and 80% of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?

4078 . A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how many coins of each type are there?

4079 . A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.

4080 . A ans B can do a work in 12 days. B can do the same work in 18 days. In how many days A can complete the 2/3 of the same work?

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