136 . ABC is a right angle of an isosceles triangle ∆ABC. BD is perpendicular to AC. Which of the following if any is not a 45° angle?

A. ∠BAD
B. ∠BCD
C. ∠CBD
D. ∠ABD
E. None of these

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Answer: Option E

Explanation:

137 . After paying 10% tax on all income over Tk.3000, Rahim had a net income of tk.12000. Rahim's income before tax (in Tk) was--

A. 12900
B. 12300
C. 13300
D. 10300
E. 13000

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Answer: Option E

Explanation:

12, 000 - 3, 000 = 9, 000

10% tax, if after tax income Tk.90 before tax income Tk.100

If after tax income Tk. 9000 before tax income Tk. = ( 100× 9000)/90 = 10, 000

Before tax income = 10, 000 + 3, 000 = Tk.13, 000

138 . After replacing an old member by a new member , it was found that the average age of five members of a club is the same as it was 3 years ago . What is the difference between the ages of the old and the new member ?

A. 15 year
B. 8 year
C. 4 year
D. 2 year
E. None of them

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Answer: Option A

Explanation:

Age decreased = (5 × 3) years = 15 years
So, the required difference = 15 years

Bangladesh Bank - Assistant Director - 2012

A. TK.750
B. TK. 875
C. TK. 745
D. TK. 756

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Answer: Option A

Explanation:

জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 2% loss
B. 1% profit
C. 1% loss
D. None of these

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Answer: Option C

Explanation:

Let the profit be X% & loss be Y%.
So, net profit/loss % = X + ( - Y) + X.( - Y)/100 (Negative sign denotes that there is a loss.) = 10 + ( - 10) + 10.( - 10)/100 = - 1 (Negative sign denotes that there is a net loss.)
So, the net loss percentage is 1%.

Sonali- Rupali- Bangladesh Krishi- Rajshahi krishi unnayn-Investment Corporation of Bangladesh | 30.11.2018

A. Amira
B. Zunaira
C. Raya
D. Both Amira and Raya

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Answer: Option C

Explanation:

Amira typing speed = 720/16 = 45 words/minutes

Reya typing speed = 820/18 = 45.56 words/minutes

Zunaira typing speed = 798/19 = 42 words/minutes

So, Reya is the fatest typist (Ans)

142 . An article costs Tk. 500 and the marked price is mentioned as Tk. 800. What is the profit % for the seller it he sells and offers a discount of 10% on the marked price ?

A. 30%
B. 44%
C. 56%
D. 64%

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Answer: Option B

Explanation:

10% of 800 = 800x10/100 = 80
Profit = (800 - 80) - 500 = 720 - 500 = 220
So, the profit % = (220x100)/500 = 44%

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

A. The cost of fruits and vegetables has risen sharply
B. Consumers have decreased their consumption of fruits and vegetables
C. The cost of fruits and vegetables is a major item in the COL
D. Other items that make up the COL have not significantly decreased in price
E. Food cost changes are reflected quickly in the COL

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Answer: Option B

Explanation:

The statement suggests that the cost of living index (COL) will increase due to a recent increase in the price of fruits and vegetables. Let's analyze the options provided:

A. The cost of fruits and vegetables has risen sharply.
This can be inferred from the statement. If the economist mentioned an increase in the price of fruits and vegetables, it suggests that their cost has risen.

B. Consumers have decreased their consumption of fruits and vegetables.
This cannot be directly inferred from the statement. The statement does not provide any information about consumer behavior or changes in consumption patterns. It only mentions the increase in the price of fruits and vegetables.

C. The cost of fruits and vegetables is a major item in the COL.
This can be inferred from the statement. If the economist suggests that the COL will go up due to the increase in the price of fruits and vegetables, it implies that fruits and vegetables are a significant component of the COL.

D. Other items that make up the COL have not significantly decreased in price.
This cannot be inferred from the statement. The statement focuses on the increase in the price of fruits and vegetables and does not provide any information about the price changes of other items included in the COL.

E. Food cost changes are reflected quickly in the COL.
This can be inferred from the statement. The economist suggests that the increase in the price of fruits and vegetables will lead to an increase in the COL next month, implying that changes in food costs are quickly reflected in the COL.

Therefore, the option that cannot be inferred from the statement is option B: Consumers have decreased their consumption of fruits and vegetables.

Bangladesh Bank - Assistant Director - 2011

A. Tk.150 or 8500
B. Tk.175 or 11700
C. Tk.180 or 10800
D. Tk.195 or 9000
E. Tk.200 or 12000

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Answer: Option E

Explanation:

X = 125% of y = 125y/100 = 5y/4
Or, y = 4x/5
Again,
X = 80% of z = 80z/100 = 4z/5
Or, z = 5x/4
X:y:z = x:4x/5:5x/4 = 20:16:25
Sum of ratio = 20 + 16 + 25 = 61

So, x makes a week = 20/61 × 36600 = 20×600 = 12000 tk. (ans)

কর্ণফুলী গ্যাস ডিস্ট্রিবিউশন কোম্পানী লিমিটেড || সহকারী ব্যবস্থাপক (সাধারণ) (04-12-2021)

A. 12.4m
B. 12m
C. 11.5m
D. 13m

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Answer: Option A

Explanation:

Let the length carriage=x

So the length of engine=(⅔)*X

According to question,

4x+(⅔)x=86.8

We get, x=8.266

So the length of engine = (⅔)*8.266=12.4

সমন্বিত ৫ ব্যাংক | অফিসার ক্যাশ | 25-03-2022 ||

A. Tk.100,000
B. Tk. 120,000
C. Tk. 125,000
D. Tk. 130,000

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Answer: Option C

Explanation:

35,000 = 10,000 + 0.2*x --> x = 125,000

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 425
B. 450
C. 475
D. None of these

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Answer: Option D

Explanation:

148 . Aslam bought 5 apples at Taka 10 and sold 4 apples at Taka 10. What will be the rate of profit?

A. 25%
B. 20%
C. 30%
D. 33.33%

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Answer: Option A

Explanation:

5 টি আপেলের ক্রয়মূল্য = 10 টাকা

∴ 1 টি আপেলের ক্রয়মূল্য = 10/5 টাকা = 2 টাকা

আবার, ৪টি আপেলের বিক্রয়মূল্য = 10 টাকা

∴ 1 টি আপেলের বিক্রয়মূল্য = 10/4 = 2.5 টাকা

শতকরা লাভ = {(2.5 - 2/2) × 100 }% = 25 %

সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

A. 38
B. 40
C. 44
D. 48
E. None of these

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Answer: Option C

Explanation:

Let the average speed of slower and faster trains be S and (S + 6) miles/hr respectively.

Time taken = 10 am to 1:30 pm = 3.5 hr

Distance travelled by slower train = 3.5S

Distance travelled by faster train = 3.5(S + 6)

Now, 3.5S + 3.5(S + 6) = 287

or, 3.5S + 3.5S + 21 = 287

or, 7S = 287 - 21

or, 7S = 266

or, S = 266/7 = 38 miles/hr

So, speed of the faster train, S + 6 = 38 + 6 = 44 miles/hr

150 . At a certain store, a chair was on sale for Tk.5000. As the manager thought he could get money for the chair, he increaed its price by 8 percent. After a week the chair had not been sold. The manager then reduced the last price by 10% and the chair was sold. For how much was the chair sold?

A. 4860
B. 4875
C. 4900
D. 4960
E. none of these

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Answer: Option A

Explanation:

After 8% increase new price = tk. 5000×108/100 = Tk.5400

Again after 10% reduction on last price, new price = Tk.5400 × 90/100 = Tk.4860

136 . ABC is a right angle of an isosceles triangle ∆ABC. BD is perpendicular to AC. Which of the following if any is not a 45° angle?

137 . After paying 10% tax on all income over Tk.3000, Rahim had a net income of tk.12000. Rahim's income before tax (in Tk) was--

138 . After replacing an old member by a new member , it was found that the average age of five members of a club is the same as it was 3 years ago . What is the difference between the ages of the old and the new member ?

139 . Ahmed sold a T- shirt TK. 810 again 8%. How much did he purchase it for?

140 . Alam sold two vehicles for Tk. 46000 each . If he gained 10% on the first and lost 10% on another , then what is his percentage profit or loss in this transaction?

141 . Amira can type 720 words in sixteen minutes, Reya can type 820 words in 18 minutes ans Zunaira can type 798 words in 19 minutes. Whos is/are the fastest typist (s)?

142 . An article costs Tk. 500 and the marked price is mentioned as Tk. 800. What is the profit % for the seller it he sells and offers a discount of 10% on the marked price ?

143 . An economist was quoted as saying that the cost of living index ( COL ) will go up next month because a recent increase in the price of fruits and vegetables . Which of the following cannot be inferred from the statement ?

144 . An employer pays 3 workers X, Y and Z a total of Tk.610 or 36600.00 a week. X is paid 125% of the amount of Y is paid and 80% of the amount of Z is paid. How much does X make a week?

145 . An engine pulls four identical carriages. The engine is 2/3 the length of a carriage and the total length of the train is 86.8m. Find the length of the engine.

35,000 = 10,000 + 0.2*x --> x = 125,000

147 . Asif purchased a radio from a store and sold it to Rahim and make profit of 20%. After few months, Rahim sold the same radio to Fahad and incurred a loss of 15%. If Fahad bought the radio for Taka.510, what was the original price that Asif had paid to purchase the radio?

148 . Aslam bought 5 apples at Taka 10 and sold 4 apples at Taka 10. What will be the rate of profit?

149 . At 10 a.m two trains started traveling toward each other from station 287 miles apar. They passed each other at 1 : 30 pm the same day. They average speed of the slower train by 6 miles per hour. Which of the following represents the speed of the faster train in miles per hour?

150 . At a certain store, a chair was on sale for Tk.5000. As the manager thought he could get money for the chair, he increaed its price by 8 percent. After a week the chair had not been sold. The manager then reduced the last price by 10% and the chair was sold. For how much was the chair sold?

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