1411 . 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

1412 . 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)

1413 . 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)

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

1415 . 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

1416 . Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

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 |

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)

1418 . 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:

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

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:

1420 . Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?

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

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Answer: Option D

Explanation:

Price at 15% off sale = 450 - 15% of 450 = 450 - 67.5 = $382.5

Price at additional 20% discount = 382.5 - 20% of 382.5 = 382.5 - 76.5 = $306

1421 . Every 3 minutes, 4 liters of water are poured into a 2,000-liter tank. After 2 hours, what percent of the tank is full?

A. 0.4%
B. 4%
C. 8%
D. 12%

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Answer: Option C

Explanation:

1422 . Every 3 minutes, 4 litres of water are poured into a 2,000 - litre tank , after 2 hours, what percent of the tank will be full?

A. 0.4%
B. 4%
C. 8%
D. 12%

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Answer: Option C

Explanation:

Hints: প্রতি 3 mim ও একবার ঢালা হলে, 2 hours এ ঢালা হবে 2 × 60 /3 = 40 বার

40 বার 4 litter করে মোট পানি ঢালা হয় 40 × 4 litter

Tank full = 4 × 40 / 2000 × 100% = 8%.

অফিসার (সাধারণ) ২৭.১২. ২০১৯

A. 80
B. 84
C. 98
D. 42

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Answer: Option B

Explanation:

As per the given in question ,
Total distance covered in two weeks = 2 (3 + 4 + 5 + 6 + 7 + 8 + 9) miles
Total distance covered in two weeks = 2 × 42 = 84 miles
Therefore , Gin jogs 84 miles in 2 weeks

1424 . Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

A. 10
B. 9
C. 12
D. 20

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Answer: Option A

Explanation:

Hints : In case of 1 hour,

Without stoppages, the bus goes 54 km

with stoppages the bus goes 45 km

Distance ( 54 - 45) = 9 km

Nows, it goes 54 km in 60 mins

it goes 1 km in 60/ 54 km

if goes 9 km in 60 × 9/ 54 = 10 mins

1425 . Experts say that 25% of all serious bicycle accidents involve head injuries and of all such head injuries, 80% are fatal. What percentage of all serious bicycle accidents involve fatal head injuries?

A. 6%
B. 20%
C. 55%
D. 105%

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Answer: Option B

Explanation:

let, Total number of accidents is 100

given, 25% of of serious bicycle accidents involved head injury and 80% head injuries are fatal

So,percentage of serious bicycle accidents involve fatal head injuries = 80% * 25% *100

= (80/100) *(25/100)*100 = 20

ans: 20%

1411 . During the season, Arambag won 21 matches and lost 30% of their total matchces. What was the number of matches that the team lost?

1412 . 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?

1413 . 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?

1414 . 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?

1415 . 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 -

1416 . Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ?

1417 . 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?

1418 . 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:

1419 . 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?

1420 . Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?

1421 . Every 3 minutes, 4 liters of water are poured into a 2,000-liter tank. After 2 hours, what percent of the tank is full?

1422 . Every 3 minutes, 4 litres of water are poured into a 2,000 - litre tank , after 2 hours, what percent of the tank will be full?

1423 . Every sunday Akbar jogs 3 miles. For the rest of the week, each day he jogs 1 mile more than the previous day. How many miles does Akbar jog in 2 weeks?

1424 . Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

1425 . Experts say that 25% of all serious bicycle accidents involve head injuries and of all such head injuries, 80% are fatal. What percentage of all serious bicycle accidents involve fatal head injuries?

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