Average Questions for Bank PO, SO, Clerk Exams with Solution - 2

Question: 6

The average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 kg. What was the teacher’s weight?

(A) 64 kg

(B) 72 kg

(D) 86 kg

View Answer

Ans: D

Average weights of 21 boys = 64 kg.

Total weights of 21 boys = 64 × 21 = 1344 kg.

The weight of the teacher was added then average increase by 1 kg.

⇒ total weight of teachers and 21 boys = 65 × 21 = 1430 kg.

Weight of teacher = 1430 – 1344 = 86 kg.

Question: 7

Find the average of 205, 302, 108, 403 and 202.

(A) 244

(B) 450

(D) 1225

View Answer

Ans: A

Sum of numbers = 205 + 302 + 108 + 403 + 202 = 1220.

Required average = $${1220}/{5}$$ = 244.

Question: 8

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is

(A) 25

(B) 27

(D) 37

View Answer

Ans: C

Total of 5 numbers = 27 × 5

Excluded number = 27 × 5 – 25 × 4 = 135 – 100 = 35.

Question: 9

The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?

(A) 40

(B) 60

(D) 84

View Answer

Ans: C

Total score in 10 innings = 32 × 10 = 320

To raise the average to 36

Total score after 11 innings = 36 × 11 = 396

∴ Runs he has to taken in the 11th innings = 396 – 320 = 76.

Question: 10

Find the average of the following sets of sores 385, 441, 876, 221, 536, 46, 291, 428.

(A) 220

(B) 401

(D) 428

View Answer

Ans: C

Average = $$({385 + 441 + 876 + 221 + 536 + 46 + 291 + 428} / {8})$$ = $${3224}/{8}$$ = 403.

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Average Questions for Bank PO, SO, Clerk Exams with Solution - 2

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