2371 . If $\frac{y}{x} = \frac{3}{7}$ and $x + 2 y = 13$ then $y$ is-

A. $2$
B. $3$
C. $4$
D. $7$

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Answer: Option B

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Assistant Director (General) 06.07.18

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2372 . If Zara walks at 5 km/hr, she reaches the bus stop 5 minutes late and if she walks at 6 km/hr , she reaches the bus stop 5 minutes earlier . The bus stop is at a distance of -

A. 3 km
B. 5 km
C. 6 km
D. 10 km
E. None of these

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Answer: Option B

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2373 . If |x−5|=3and|2y−1|/3=5,then|x+y| could equal each of the following EXCEPT ?

A. 6
B. 8
C. 7
D. 15

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Answer: Option B

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Probationary Officer | 31.03.2017 ||

A. 4
B. 6
C. 8
D. 12

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Answer: Option D

Explanation:

Hints: x জন করে 8 দিনে

1 জন করে 8x দিনে

(x + 4) জন করে 6 দিনে

1 জন করে 6(x + 4) দিনে

এখন, 8x = 6x + 24

2x = 24

x = 12

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2375 . In a company 60 percent of the male employees and 70 percent of the female employees eat only veg food. If 66 percent of all the employees eat only veg food, what is the ratio of female employees eat only veg food. what is the ratio of female employees to male employees?

A. 50
B. 60
C. 80
D. None

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Answer: Option B

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শিল্প মন্ত্রণালয়ের অধীন বিসিআইসি | সহকারী ব্যবস্থাপক (প্রশাসন) | ০৮.১২.২০১৮

A. 45
B. 90
C. 63
D. 126

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Answer: Option C

Explanation:

required number of ways=7C5×3C2

=7×6/2 ×3

=63 ways

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 6
B. 8
C. 9
D. 12

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Answer: Option C

Explanation:

In second stage,

100 taka in 1 year gains 41/2 or 9/2 taka

1 taka in 1 year gains 9 /(2×100) taka

800 taka in 3 year gains = ( 9×3×800)/200 = 108 tk

In first stage,

100 taka gains 8 taka

1 taka gains 8/100 taka

150 taka gains (8×150)/100 taka = 12 taka

Now, 12 tk is gained in 1 year

108 tk is gained in = 108/12 = 9 years

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পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

2378 . In $1 - 3 x \leq 4,$ then--

A. $x \leq - 2$
B. $x \geq - 2$
C. $x \leq - 1$
D. $x \geq - 1$

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Answer: Option D

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Assistant Director (General) 06.07.18

A. 19 years
B. 29 years
C. 39 years
D. 49 years

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Answer: Option C

Explanation:

Let B's present age = x years.

Then, A's present age = (x + 9) years

∴(x+9)+10=2(x−10)⇔x+19=2x−20⇔ x=39

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NRBC Bank PLC || Trainee Assistant Officer (TAO) (26-10-2024) || 2024

A. 20 m
B. 25 m
C. 22.5 m
D. 9 m

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Answer: Option A

Explanation:

Hints: Distance covered by B in 9 sec = (100/45)×9 m = 20 m

A beats B by 20 metres

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2381 . In a 100m race, A beats B by 10m and C by 13m. In a race of 180m, B will beat C by--

A. 5.4m
B. 4.5m
C. 5m
D. 6m

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Answer: Option D

Explanation:

Hints: A:B = 100:90 ; A:C = 100:87

B/C = B/A × A/C = 90/100 × 100/87 = 30/29

যখন B 30 m যায়, C যায় (29/30 × 180) বা 174m

B beats C by = 180 - 174 = 6

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2382 . In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is :

A. 33 sec
B. 40 sec
C. 47 sec
D. None of these

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Answer: Option A

Explanation:

Hints : B runs 35m in 7 sec

B covers 200 m in ( 7/35 × 200) = 40 sec

B's time over the course = 40 sec

A's time over the course = (40 - 7) sec = 33 sec

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2383 . In a 500m race, the ratio of the speeds of two comtestants A and B is 3 : 4. A has start of 140m. Then A wins by:

A. 60m
B. 40m
C. 20m
D. 10m

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Answer: Option C

Explanation:

Ajmal কে গন্তব্যে পোঁছাতে অতিক্রম করতে হয় (500 - 140) = 360 মিটার
Ajmal যখন 3 মিটার অতিক্রম করে Badal তখন অতিক্রম করে 4 মিটার
Ajmal " 360 " " " Badal " " "
4×360/3=480মিটার

অর্থাৎ Ajmal যখন 360 মিটার cover করে গন্তব্যে পোঁছে Badal তখন cover করে ৪৮০ মিটার।
সুতরাং Ajmal জয়লাভ করে (500 - 480) = 20 মিটারে ।

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 81 liters
B. 71 liters
C. 56 liters
D. 50 liters

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Answer: Option A

Explanation:

In the initial mixture, the ratio of milk to water is 7:2. This means that there are 7 parts of milk and 2 parts of water in the mixture.

Given that the total volume of the mixture is 729 liters, we can calculate the amount of milk and water in the initial mixture as follows:

Amount of milk = (7/9) * 729 = 7 * 81 = 567 liters Amount of water = (2/9) * 729 = 2 * 81 = 162 liters

Now, we want to add some water to this mixture to achieve a new ratio of milk to water, which is 7:3.

Let's denote the amount of water to be added as "x" liters. Since we want the ratio of milk to water to be 7:3 in the new mixture, the amount of milk in the new mixture remains the same (567 liters), and the amount of water should be (3/7) times the amount of milk. So, we have:

Amount of water in the new mixture = (3/7) * Amount of milk in the new mixture

Now, let's calculate the amount of milk in the new mixture:

Amount of milk in the new mixture = 567 liters (unchanged)

Amount of water in the new mixture = (3/7) * 567 = 243 liters

In the new mixture, there are already 162 liters of water from the initial mixture. To achieve the desired ratio, we need to add 243 - 162 = 81 liters of water.

So, you need to add 81 liters of water to the initial mixture to get a new mixture containing milk and water in the ratio 7:3

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

A. 80%
B. 100%
C. 200%
D. 250%
E. None of these

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Answer: Option E

Explanation:

let, in 2007 was = 100

,, 2008 ,, = 20

,, 2009 ,, = 100

increase percentage = ( 100 - 20/20)

= 400% (answer)

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BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

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2372 . If Zara walks at 5 km/hr, she reaches the bus stop 5 minutes late and if she walks at 6 km/hr , she reaches the bus stop 5 minutes earlier . The bus stop is at a distance of -

2373 . If |x−5|=3and|2y−1|/3=5,then|x+y| could equal each of the following EXCEPT ?

2374 . If ‘x’ men can do a work in 8 days and ‘x + 4’ men can do it in 6 days, what is the value of ‘x’?

2375 . In a company 60 percent of the male employees and 70 percent of the female employees eat only veg food. If 66 percent of all the employees eat only veg food, what is the ratio of female employees eat only veg food. what is the ratio of female employees to male employees?

2376 . In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

2377 . In how many years, Tk. 150 will produce the same interest @8% Tk.800 produce in years @4.5%

2379 . In 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B, then the present age of B is

2380 . In a 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by :

2381 . In a 100m race, A beats B by 10m and C by 13m. In a race of 180m, B will beat C by--

2382 . In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is :

2383 . In a 500m race, the ratio of the speeds of two comtestants A and B is 3 : 4. A has start of 140m. Then A wins by:

2384 . In a 729 liters mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7: 3, the amount of water to be added is-

2385 . In a book store, the sales of a book decreased by 80% from 2007 to 2008. If the sales in 2009 were the same as in 2007, would be the percentage increase in sales from 2008 to 2009?

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