2476 . Karim has bought some pens for 120 taka. If each pen cost him 2 taka less then he could buy 2 more pens. How many pens did he buy?

A. 8
B. 10
C. 12
D. 14

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Answer: Option B

Explanation:

Let's use algebra to solve this problem. Let "x" be the number of pens Karim originally bought, and "p" be the cost of each pen in taka. We are given two pieces of information:

He bought some pens for 120 taka, which means: x * p = 120

If each pen cost him 2 taka less, he could buy 2 more pens, which means: (x + 2) * (p - 2) = 120

Now, we have a system of two equations:

x * p = 120
(x + 2) * (p - 2) = 120

We can solve this system of equations simultaneously. Let's start with equation (1):

x * p = 120

Now, let's express "p" in terms of "x" from equation (1):

p = 120 / x

Now, substitute this expression for "p" into equation (2):

(x + 2) * ((120 / x) - 2) = 120

Let's simplify this equation:

(x + 2) * ((120 - 2x) / x) = 120

Now, let's eliminate the fractions by multiplying both sides by "x":

(x + 2) * (120 - 2x) = 120x

Expand and simplify:

120x - 2x^2 + 240 - 2x = 120x

Now, bring all the terms to one side:

-2x^2 + 240 - 2x = 0

Divide the entire equation by -2 to simplify:

x^2 - 120 + x = 0

Now, let's solve this quadratic equation for "x." We can use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

In this case, a = 1, b = -120, and c = 1. Plug these values into the formula:

x = (-(-120) ± √((-120)² - 4(1)(1))) / (2(1))

Simplify:

x = (120 ± √(14400 - 4)) / 2

x = (120 ± √14396) / 2

Now, calculate the square root:

x = (120 ± 119.997) / 2

Now, consider both the positive and negative roots:

x = (120 + 119.997) / 2 ≈ 119.998 / 2 ≈ 59.999 (approximately 60)
x = (120 - 119.997) / 2 ≈ 0.003 / 2 ≈ 0.0015 (approximately 0)

Since Karim cannot buy 0 pens, the only reasonable solution is that he originally bought approximately 60 pens.

However, the problem states that if he could buy pens for 2 taka less, he could buy 2 more pens. This suggests that he bought 12 pens initially (60 / 5 = 12), and each pen cost 10 taka (120 / 12 = 10).

So, Karim initially bought 12 pens.

2477 . Karim has exactly 3 times as many Bangladesh as non-Bangladesh stamps in his collection . Which of the following cannot be the number of stamps in Karim's collection ?

A. 54
B. 72
C. 80
D. 96

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Answer: Option A

Explanation:

Here, the ratio is 3 : 1. The total number of stamps must be divisible by the sum of the ratios which is (3 + 1 = 4). Only the number 54 is not divisible by 4. So, 54 cannot be the total number of stamps in his collection.

2478 . Kibria went to the swtationers and bought things worth Tk 25 out of which 30 paisa was sales tax on taxable items. If the tax rate is 6% , then what was the cost of the tax free items?

A. Tk 15
B. Tk 15.70
C. Tk 19.70
D. Tk 20
E. None of these

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Answer: Option C

Explanation:

Let the amount taxable payments be Tk. x

According to question, 6% of x = 30/100

x = (30/100 ×100/6

x = 5

Cost of tax free items = [ 25 - (5 + . 30)] = tk.19.70

2479 . Kiran purchased a scooter for Tk.52000. He sold it at loss of 10%. With that money he purchased another scooter and sold it at profit of 20%. What is his overall loss profit?

A. tk.2060 profit
B. tk.2560 loss
C. tk.1340 loss
D. tk.4160 profit

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Answer: Option D

Explanation:

SP of the 1st Scooter = (100 – Loss%) /100 x CP
= 90/100 × 52000

= 46800/-
SP of the 2nd Scooter = (100 + Gain%) /100 X CP
= 120/100 × 46800

= 56160
Profit = Tk. 56160 – Tk.. 52000 = Tk. 4160/-

অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ ||

A. Tk. 252.50
B. Tk. 606
C. Tk. 10,100
D. Tk. 101

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Answer: Option D

Explanation:

সহকারী পরিচালক(AD) -12.11.2021

A. Tk. 10,464
B. Tk. 864
C. Tk. 816
D. Tk. 800

View Answer	Favorite Question

Answer: Option C

Explanation:

চক্রবৃদ্ধি মুনাফার ক্ষেত্রে সবৃদ্ধিমূল

c = p ( 1 + r/m)^mn

= 10000[ 1 + 8/(2×100)]^2.1

= 10000 × (1.04)²

= 10816

চক্রবৃদ্ধি মুনাফা ( 10816 - 10000) টাকা = 816 টাকা

2482 . Laboni bought a 1-year Tk.10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of an interest paid on this certificate at maturity?

A. Tk. 10,464
B. Tk. 864
C. Tk. 816
D. Tk. 800

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Answer: Option C

Explanation:

2483 . Lamia owns a hairdressing salon. She borrows Tk. 2500 from a bank to improvements to her beauty salon. She is charged 4.5% per year compound interest. She pays the money back after 3 years. Calculate the total amount Lamina must pay to the bank?

A. Tk. 2852.92
B. Tk. 2528.29
C. Tk. 2752.29
D. Tk. 2679.92

View Answer	Favorite Question

Answer: Option A

Explanation:

2484 . Last season, Ellen and Janet together won 32 tennis matches. Ellen won 6 more matches than Janet. How many matches did Ellen win?

A. 13
B. 16
C. 19
D. 25

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Answer: Option C

Explanation:

E + J = 32

E + (E - 6) = 32

2E = 32 + 6 = 38

E = 19.

2485 . Last year I bought 1000 shares of Sunshine Enterprises at Taka 17.25 per share. Today the stock is quoted at Taka 17375. How much profit shall I make by selling all the shares today?

A. 800
B. 125
C. 400
D. 100

View Answer	Favorite Question

Answer: Option B

Explanation:

Cost of share = 17.25 x 1000 = 17250 TK.

Profit = 17375 - 17250 = 125 TK.

2486 . Last year the sales of store X in December was 4 times the average of the monthly sales totals for January through November. The sales total for December was what fraction of the sales total for the year?

A. 1/4
B. 4/15
C. 1/3
D. 4/11

View Answer	Favorite Question

Answer: Option B

Explanation:

মডেম একটি ডেটা কমিউনিকেশন ডিভাইস যা ডেটাকে এক কম্পিউটার থেকে অন্য কম্পিউটারে মাধ্যমের সাহায্যে পৌঁছে দেয়। Modem এর পূর্ণ নাম হল Modulation demodulation .

Bangladesh Bank - Assistant Director - 2006

A. 1800
B. 1600
C. 1500
D. 1348

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Answer: Option D

Explanation:

2488 . Length of a rectangle is increased by 60%. By what percent would the width have to be decreased to maintain the same area?

A. 75%
B. 55%
C. 75/2%
D. 60%

View Answer	Favorite Question

Answer: Option C

Explanation:

2489 . Length of a train is 170 meters and speed of train is 63 km/hr. This train can pass a bridge in 30 seconds, then find the length of the bridge.

A. 355 m
B. 365 m
C. 325 m
D. 312 m

View Answer	Favorite Question

Answer: Option A

Explanation:

Basic bank recruitment 2018; auditor 26.01.2018 || Image 2018

A. 2000
B. 1200
C. 1500
D. 750

View Answer	Favorite Question

Answer: Option C

Explanation:

Difference between C's ratio and A and B's ratios together = 7 - (2 + 3) = 2

Ratio 2 ≡ 1500 TK

So, A will get 1500 TK.

2476 . Karim has bought some pens for 120 taka. If each pen cost him 2 taka less then he could buy 2 more pens. How many pens did he buy?

2477 . Karim has exactly 3 times as many Bangladesh as non-Bangladesh stamps in his collection . Which of the following cannot be the number of stamps in Karim's collection ?

2478 . Kibria went to the swtationers and bought things worth Tk 25 out of which 30 paisa was sales tax on taxable items. If the tax rate is 6% , then what was the cost of the tax free items?

2479 . Kiran purchased a scooter for Tk.52000. He sold it at loss of 10%. With that money he purchased another scooter and sold it at profit of 20%. What is his overall loss profit?

2480 . Kona deposited Tk. 505 into her savings account. If the interest rate of the account is 5% per year, how much interest will she have made after 4 years?

2481 . Laboni bought a 1 year, Tk. 10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of interest paid on his certificate at maturity?

2482 . Laboni bought a 1-year Tk.10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of an interest paid on this certificate at maturity?

2483 . Lamia owns a hairdressing salon. She borrows Tk. 2500 from a bank to improvements to her beauty salon. She is charged 4.5% per year compound interest. She pays the money back after 3 years. Calculate the total amount Lamina must pay to the bank?

2484 . Last season, Ellen and Janet together won 32 tennis matches. Ellen won 6 more matches than Janet. How many matches did Ellen win?

2485 . Last year I bought 1000 shares of Sunshine Enterprises at Taka 17.25 per share. Today the stock is quoted at Taka 17375. How much profit shall I make by selling all the shares today?

2486 . Last year the sales of store X in December was 4 times the average of the monthly sales totals for January through November. The sales total for December was what fraction of the sales total for the year?

2487 . Last year there were 1172 students at Gulshan High school. This year there are 15 percent more students than last year. Approximately how many students are at Gulshan High School this year?

2488 . Length of a rectangle is increased by 60%. By what percent would the width have to be decreased to maintain the same area?

2489 . Length of a train is 170 meters and speed of train is 63 km/hr. This train can pass a bridge in 30 seconds, then find the length of the bridge.

2490 . Let A, B and C shares profit at the ratio of 2 : 3 : 7 and A and B together get Tk.1500 less than C gets. How much A will get:

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