1531 . Druing a special promotion, a certain filling station is offering a 10% discount on gas purchased after the first the first 10 gallons. If Kim purchased 20 gallons of gas, and Zeni purchased 25 gallons of gas, then Zeni's total per-gallon discount is what percent of Kim's total per-gallon discount?

A. 80%
B. 120%
C. 140%
D. 100%
E. None of these

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Answer: Option B

Explanation:

আমাদের কেবল বের করতে হবে কতটুকু পরিমাণে তারা discount পাবে। Actual discount percent নিয়ে চিন্তা না করলেও হবে, যেহেতু, ভাগ করার সময় percentage (10%) বাদ  হবে Zeni 25 gallon এর মধ্যে 15 gallon এবং Kim 20 gallon এর মধ্যে 10 gallon discount পায়। তাহলে Kim এর সাপেক্ষে।

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1532 . Due to a 25% increase in the price of salt, a person got 10 kg less quantity for Tk 500 than he was getting before the increase. What was the initial price per kg of salt in taka?

A. 10
B. 15
C. 25
D. 30

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Answer: Option A

Explanation:

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

A. 17
B. 18
C. 19
D. 20
E. None of these

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Answer: Option E

Explanation:

To calculate the percentage increase in revenue, you can use the following formula:

Percentage Increase = [(New Value - Old Value) / Old Value] * 100%

In this case, the old value represents the initial revenue before the price reduction, and the new value represents the revenue after the price reduction and increase in sales.

Let's assume the initial revenue is represented by "R" (you can use any value), and the price reduction is 10%, which means the new price is 90% of the old price.

So, the new revenue (after price reduction) can be expressed as:

New Revenue = (0.90 * R) * 1.35

Here, 0.90 represents the 90% of the old price, and 1.35 represents a 35% increase in sales (135% of the old quantity).

Now, let's calculate the percentage increase in revenue:

Percentage Increase = [(New Revenue - Old Revenue) / Old Revenue] * 100%

Percentage Increase = [(0.90 * R * 1.35 - R) / R] * 100%

Simplify:

Percentage Increase = [(1.215 * R - R) / R] * 100% Percentage Increase = [(0.215 * R) / R] * 100%

The "R" terms cancel out:

Percentage Increase = 0.215 * 100%

Percentage Increase = 21.5%

So, the percentage increase in revenue is 21.5%. Since none of the provided options match this value, the correct answer is “None of these.”

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বাংলাদেশ গ্যাস ফিল্ড | সহকারী-ব্যবস্থাপক | 03-12-2021 || 2021

A. 17
B. 19
C. 20
D. 21

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Answer: Option B

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Bangladesh Bank - Assistant Director - 2006

A. Tk. 220
B. Tk. 250
C. Tk. 150
D. Tk. 200
E. None of these

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Answer: Option D

Explanation:

Price after 15% discount = 100 - 15 = 85 TK.

Price after 15% raise = 100 + 15 = 115

Price difference = 115 - 85 = 30 TK.

If price difference is 30 TK. then original price is 100 TK.

If price difference is 60 TK. then original price is 100 x 60 / 30 = 200 TK

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1536 . During the season, Arambag won 21 matches and lost 30% of their total matchces. What was the number of matches that the team lost?

A. 9
B. 12
C. 7
D. 11

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Answer: Option A

Explanation:

They won 70% of the matches.

So, 70% = 21 matches.

30% = 21 x 30 / 70 = 9 matches

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1537 . E is the son of A. D is the son of B. E is married to C. C is B's daughter. How is D related to E?

A. Brother
B. Brother-in-law
C. Uncle
D. Father-in-law

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Answer: Option B

Explanation:

Of C is B's daughter then D is C's brother.

Wife's brother is called brother in law

So, D is brother in law of E

(ans)

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1538 . Each boy contributed money equal to the number of girls and each girl contributed money equal to the number of boys in a class of 60 students. If the total contribution thus collected is Tk. 1,600, how many boys are there in the class?

A. 30
B. 25
C. 50
D. 20
E. None of these

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Answer: Option D

Explanation:

Let's say,

Number of boys=x

So, number of girls=60-x

As per the question,

x×(60-x)+(60-x)×x=1600

or, x=20

So there are 20 boys

(ans)

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দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

A. 5
B. 6
C. 10
D. 15
E. None of these

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Answer: Option A

Explanation:

Tourists of first group board buses is 3/4 of 60 = 45

Tourists of 2nd group board buses 2/3 of 60 = 40

Difference is 45 - 40 = 5

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1540 . Eight people are planning to share equally the cost of a rental car . If one person withdraws from the arrangement and the others share equally the entire cost of the car ,then the share of each of the remaining persons will be increased by -

A. 1/7
B. 1/85
C. 7/8
D. 1/2
E. None of these

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Answer: Option A

Explanation:

Original share of 1 person = 1/8

New share of 1 person = 1/7

Increase = ( 1/7 - 1/8) = 1/56

Required fraction = (1/56) / (1/8) = 1/7

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1541 . Eight people are planning to share equally the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire cost of the car, then the share of each of the remaining persons will be increased by-

A. $\frac{1}{8}$
B. $\frac{1}{7}$
C. $\frac{7}{8}$
D. $\frac{8}{9}$

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Answer: Option C

Explanation:

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বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023) || 2023

A. 60
B. 85
C. 105
D. 120

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Answer: Option C

Explanation:

৮ টা পোলের মাঝে ফাকা স্থান ৭টা। । তাই ৭*১৫ = ১০৫ |

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Bangladesh Bank - Officer - 2001

A. 23
B. 21
C. 17
D. 11

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Answer: Option D

Explanation:

Let, 8 years back, Zaber age was = 8P years
and Adil age was = 8P/8 = P years
after 8 years later,
present age of Zaber = 8P+8 and Adil = P+8
10 years from now, Zaber will be = 8P+8+10
and Adil will be = P+8+10
As per Question,
8P+8+10 = 2(P+8+10)
8P+18 = 2(P+18)
4P+9 = P+18
3P = 9
P = 3
So, present age of Adil = P+8 = 3+8 = 11 years (Ans)

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গ্যাস ট্রান্সমিশন কোম্পানি লিমিটেড | সহকারী ব্যবস্থাপক - 26.11.2021 || 2021

A. 54
B. 72
C. 105
D. 108

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Answer: Option D

Explanation:

Let the present age of father be x and that of his Son Be y

Then 18 years ago

Father's age =x−18

Son's age =y−18

But given that

x−18=3(y−18)

⇒x−18=3y−54

⇒x−3y+36=0 (1)

Also given that x=2y (2)

From (1) & (2)

x−3y=36=0

⇒2y−3y+36=0

⇒y=36

Putting y=36 in (2)

x=2y

=2×36

=72

Sum of their present ages

=x+y

72+36

=108

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পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. $280.90
B. $287
C. $292.50
D. $306

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Answer: Option D

Explanation:

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1532 . Due to a 25% increase in the price of salt, a person got 10 kg less quantity for Tk 500 than he was getting before the increase. What was the initial price per kg of salt in taka?

1533 . Due to reduction in books priceby 10%. The number of books sold increased by 35%. What was the percentage increase in revenue?

1534 . Due to reduction in the bus fare by 15%, the number of passengers on a certain route increased by 40% then what will be the percentage increase in revenue?

1536 . During the season, Arambag won 21 matches and lost 30% of their total matchces. What was the number of matches that the team lost?

1537 . E is the son of A. D is the son of B. E is married to C. C is B's daughter. How is D related to E?

1538 . Each boy contributed money equal to the number of girls and each girl contributed money equal to the number of boys in a class of 60 students. If the total contribution thus collected is Tk. 1,600, how many boys are there in the class?

1539 . Each of two groups of tourists has 60 people. If three-fourth of the first group and two-third of the second group board buses to travel to a museum, how many more people of the first group board buses than that of the second group?

1540 . Eight people are planning to share equally the cost of a rental car . If one person withdraws from the arrangement and the others share equally the entire cost of the car ,then the share of each of the remaining persons will be increased by -

1542 . Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

1543 . Eight years back Adil's age ws 1/8 th of Zabers age . ten years from now, Zaber's age will be double of Adil's age. Howm many old is Adil Now?

1544 . Eighteen years ago, a father was three times as old as his son. Now, the father is only twice as old as his son. then, the sum of the present ages of the son and the father is:

1545 . Employees of a discount appliance store receive an additional 20% off of the lowest on an item. If an employee purchases a dishwasher during a 15% off sale, how much he will pay if the dishwasher originally cost $450?

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