3886 . X number of students in a class agreed to donate a total of Tk. Z to a charity. If 4 students drop out, how much more will each of the rest have to contribute so that the total donation remains the same?

A. Z/4-X
B. 4Z/(X2-4X)
C. Z/(X=4)
D. none

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Answer: Option B

Explanation:

ব্যাখাঃ

x শিক্ষার্থীর প্রত্যেকে চাঁদা দেয় z/x টাকা

(x - 4) শিক্ষার্থী প্রত্যকে চাঁদা দেয় = z/ x - 4 টাকা

বেশি চাদার পরিমান = z/x - 4 - z/x = 4z / x² - 4x

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3887 . X purchased some pens for Tk.120. If the price per price of pen was Tk.3 less, he would have received 2 more pens. How many pence did he purchase?

A. 6
B. 8
C. 10
D. 12

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Answer: Option B

Explanation:

Let the number of pens be N.

Then, price of each pen = 120/N

He would get (N + 2) pens if the price of each pen was [120/N - 3].

So, 120 / (N + 2) = (120/N) - 3

or, 120 / (N + 2) = (120 - 3N) / N

or, 120N = (120 - 3N) (N + 2)

or, 120N = 120N + 120 x 2 - 3N2 - 3N x 2

or, 3N2 + 6N + 120N - 120N - 240 = 0

or, 3N2 + 6N - 240 = 0

or, N2 + 2N - 80 = 0

or, N2 + 10N - 8N - 80 = 0

or, N(N + 10) - 8(N + 10) = 0

or, (N + 10) (N - 8) = 0

or, N - 8 = 0 [N + 10 = / 0]

So, N = 8

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3888 . x sells a product to y and makes a profit of 25%. Y sells it to z at a loss of 20%. If z buys it for TK. 140, what price did x pay for it?

A. 210
B. 175
C. 140
D. 126
E. 200

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Answer: Option C

Explanation:

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Bangladesh Bank - Officer(Cash) - 2011

A. TK. 200
B. TK. 150
C. TK. 100
D. TK. 50

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Answer: Option D

Explanation:

Purchase price of X = x

Selling price of Y =1.28x

Z=0.75 of 1.28x= 0.96x

ATQ,

0.75 of 1.28x=x-2

Or, 0.96x=x-2

So, x=50

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বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

A. 7
B. 6
C. 5
D. 4
E. None of them

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Answer: Option B

Explanation:

x/2 + 3 = x/3 + 4

or, x/2 - x/3 = 4 - 3

or, (3x - 2x)/6 = 1

∴ x = 6

ans: 6

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Sonali- Janata- Agrani &amp- Rupali Bank Ltd. Senior Officer Recruitment 14.03.2008

A. TK. 1,600 loss
B. TK. 600 loss
C. No profit or loss
D. TK. 600 profit
E. None of these

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Answer: Option E

Explanation:

SP=800×800=640000 taka

CP=800×600=48000 taka

Profit=640000-480000=160000 taka

Again,

SP=1000×500=500000 taka

CP=1000×600=600000 taka

Loss=600000-500000=100000 taka

So, Net profit=160000-100000=60000 taka

(ans)

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3892 . You are considering investing in a firm and wish to place a value on the common stock. The dividend on the firm's stock has not changed in the last five years. In absence of any information suggesting future changes in the dividend rate, the most appropriate stock valuation model be the -----model.

A. zero growth
B. constant growth
C. non-constant groth
D. growing perpetuity

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Answer: Option A

Explanation:

soothe প্রশমিত করা। এ্যালার্ম ঘড়ির শব্দ প্রশমিত করা কঠিন নয়।

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3893 . You are looking at a billboard 40 meter away with an angle of elevation of 30 degree. At what height is the billboard?

A. 20
B. 30
C. 40
D. 80

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Answer: Option A

Explanation:

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ওয়েজ আর্নার্স কল্যাণ বোর্ড || সহকারী পরিচালক (22-11-2024) || 2024

A. 3
B. 4
C. 5
D. 6

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Answer: Option C

Explanation:

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Sonali &amp- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

A. 24
B. 30
C. 36
D. 32
E. None of them

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Answer: Option C

Explanation:

Let

Previous price of a mango was tk x

So, current price of a mango is x(80%) or tk 4x/5

ATO,

75/(4x/5) = 75/x + 5

= > 20x + 300 = 375

= > x = 15/4

So, the current price of dozen of mango is 12 x 4/5 x 15/4 or tk 36.

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3896 . You got $\frac{25}{36}$ after you increased the numerator of a fraction by 50% and decreased the denominator by 28%. What was the original fraction? (একটি ভগ্নাংশের লব ৫০% বৃদ্ধি এবং হর ২৮% হ্রাস করার পরে তুমি $\frac{২ ৫}{৩ ৬} \frac{১}{৪}$ পেয়েছ। মূল ভগ্নাংশটি কত ছিল?)

A. $\frac{১}{৩}$
B. $\frac{১}{২}$
C. $\frac{১ ৬}{২ ৭}$
D. $\frac{৫}{৯}$

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Answer: Option A

Explanation:

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Dutch Bangla Bank || Sales Manager (18-09-2024) || 2024

A. 25.22 years
B. 12.18 years
C. 15.27 years
D. None of these

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Answer: Option D

Explanation:

subject, plural হওয়ার কারণে verb and plural হবে অর্থাৎ are বসবে।

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3898 . You own a bond issued by the CP railroad that promises to pay holder Tk. 100 annually forever. You plan to sell the born three years from now. If similar investments yield 6 percent at that time, how much will the boan be worth?

A. Tk. 918.79
B. Tk. 1,333.34
C. Tk. 1,666.67
D. Tk. 1,789.42

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Answer: Option C

Explanation:

Polite অর্থ ভদ্র, অন্য বসগুলো শব্দের অর্থ টক বিশেষ।

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3899 . Your doctor gives you pills to take one for every half hour. How long does it require to take all the pills ?

A. Half Hour
B. One Hour
C. One and Half Hour
D. Two Hours
E. None of these

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Answer: Option B

Explanation:

You need one hour. You take the first pill at the beginning of the hour, then wait a half hour and take the second pill, then you wait another half hour and take the third and the last pill at the end of the hour.

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Bangladesh Bank - Assistant Director - 2009

A. Tk. 75
B. Tk. 80
C. Tk. 125
D. Try your self

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Answer: Option D

Explanation:

The difference in taxes is:

[1,070 + 0.07(29,000 - 25,000)] - [1,070 + 0.07(26,000 - 25,000)]

0.07(4,000) - 0.07(1,000)

0.07(3,000) = 210.

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Bangladesh Bank - Assistant Director - 2015

3886 . X number of students in a class agreed to donate a total of Tk. Z to a charity. If 4 students drop out, how much more will each of the rest have to contribute so that the total donation remains the same?

3887 . X purchased some pens for Tk.120. If the price per price of pen was Tk.3 less, he would have received 2 more pens. How many pence did he purchase?

3888 . x sells a product to y and makes a profit of 25%. Y sells it to z at a loss of 20%. If z buys it for TK. 140, what price did x pay for it?

3889 . X sells an item to Y at a profit of 28% on his cost and sells the same item to Z at a loss of 25% on his cost. If Y thus sold the item to Z a Tk. 2 less than the item to X, then what is the cost of the item to X?

3890 . x/2+3 = x/3+4. In this equation what is the value of x?

3891 . XYZ company sold 800 units of watches for TK.800 each and 1,000 units of watches for TK. 500 each. If the company's cost of producing each unit of watch was TK. 600, what was the company's profit or loss ?

3893 . You are looking at a billboard 40 meter away with an angle of elevation of 30 degree. At what height is the billboard?

3894 . You bought 11 pencils and erasers cost half that of a pencil and you bought one extra eraser, how much is the eraser worth?

3895 . You can now buy 5 more Mangoes with Tk 75 due to reduction in price by 20 percent. Calculate the current price of one dozen of Mangoes.

3897 . You have Tk. 90,000 saved today and want to purchase a new bike when your money grows to Tk. 250,000. If you can earn 8 percent on your percent on your investments, how long do you have to wait to buy your bike?

3898 . You own a bond issued by the CP railroad that promises to pay holder Tk. 100 annually forever. You plan to sell the born three years from now. If similar investments yield 6 percent at that time, how much will the boan be worth?

3899 . Your doctor gives you pills to take one for every half hour. How long does it require to take all the pills ?

3900 . Your income for a year is Tk. 26,000 . You receive a raise so that next year's income will be Tk. 29,000. How much more will you pay in taxes next year if the tax rate remains the same ?

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