Average - Quantitative Aptitude (MCQ) questions

1)   3 boxes have some average weight. When one box which weighs 89 kg is replaced by another box, the average weight increases by 5 kg. How much the new box weighs?
- Published on 17 Mar 17

a. 109 kg
b. 94 kg
c. 104 kg
d. 84 kg
Answer  Explanation 

ANSWER: 104 kg

Explanation:
averages


2)   Knowing that Vijay‚Äôs expenditure for first 3 days is Rs. 100, Rs. 125 and Rs. 85, what is his 4th day expenditure as his 4 days average expenditure Rs. 90?
- Published on 17 Mar 17

a. Rs. 220
b. Rs. 60
c. Rs. 50
d. Rs. 90
Answer  Explanation 

ANSWER: Rs. 50

Explanation:
averages


3)   Without considering the salary of the boss, the average salary reduces by Rs. 1000. What will be salary of boss if average salary of 11 employees and the boss is Rs. 18000?
- Published on 15 Mar 17

a. Rs. 30000
b. Rs. 27000
c. Rs. 36000
d. Rs. 29000
Answer  Explanation 

ANSWER: Rs. 29000

Explanation:
averages


4)   A batsman played 11 innings and has a certain average. This average increases by 2 runs when his 3 innings of 32 runs, 33 runs and 34 runs are replaced by 3 other innings. Find the average of these 3 new innings.
- Published on 15 Mar 17

a. 40 runs
b. 35 (3/8) runs
c. 42 (3/8) runs
d. 40 (1/3) runs
Answer  Explanation 

ANSWER: 40 (1/3) runs

Explanation:
averages


5)   Of the 20 cycles sold by Ajay, average cost of 12 cycles is Rs. 18000. In total he earned Rs. 300000. What was the average cost of remaining cycles?
- Published on 15 Mar 17

a. Rs. 10500
b. Rs. 7500
c. Rs. 9125
d. Rs. 9750
Answer  Explanation 

ANSWER: Rs. 10500

Explanation:
averages


6)   In a group of people, the oldest and the youngest have an age difference of 100 years. If these two are left out of counting, then the average age of the remaining 40 people is 28. The average age of entire group being 30, how old is the eldest person?
- Published on 15 Mar 17

a. 101 years
b. 115 years
c. 120 years
d. 103 years
Answer  Explanation 

ANSWER: 120 years

Explanation:
averages


7)   Had Ajay scored 18 runs more in his 3rd innings and 4 runs more in his 7th innings, his average would have become 66 runs. But it is 64 runs. How many innings did he play?
- Published on 15 Mar 17

a. 15
b. 10
c. 12
d. 11
Answer  Explanation 

ANSWER: 11

Explanation:
averages


8)   What will be average price of all the goods bought, if Ajay buys 30 erasers for Rs. 3 each, 35 chocolates for Rs. 10 each and 25 clips at the rate of Rs. 4 each?
- Published on 15 Mar 17

a. Rs. 9
b. Rs. 6
c. Rs. 5.5
d. Rs. 8.25
Answer  Explanation 

ANSWER: Rs. 6

Explanation:
averages


9)   What will be the ratio of number of history books to number of geography books, if average number of pages of all books is 158, average number of pages of all history books is 164 and average number of pages of geography books 154?
- Published on 10 Mar 17

a. 3:5
b. 5:3
c. 2:3
d. 3:2
e. 77:82
Answer  Explanation 

ANSWER: 2:3

Explanation:
averages


10)   The average of first 17 multiples of 13 is
- Published on 10 Mar 17

a. 110.5
b. 117
c. 221
d. 111
Answer  Explanation 

ANSWER: 117

Explanation:
averages


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