Maths Mcqs Practice Test

Question 1

The average of 10 numbers is 23. If each number is increased by 4, what will the new average?

Accepted Answer

B. 27

Question 2

The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?

Accepted Answer

A. 125

Question 3

The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?

Accepted Answer

C. 4500

Question 4

The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

Accepted Answer

D. 52.5

Question 5

A batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. Find his average after the 16th inning?

Accepted Answer

D. 19

Question 6

The average of 13 numbers is 60. Average of the first 7 of them is 57 and that of the last 7 is 61. Find the 8th number?

Accepted Answer

A. 46

Question 7

Find the average of the first 20 natural numbers?

Accepted Answer

D. 10.5

Question 8

The average of 11 results is 50, if the average of first six results is 49 and that of the last six is 52. Find the sixth result?

Accepted Answer

B. 56

Question 9

The average of five results is 46 and that of the first four is 45. The fifth result is__________?

Accepted Answer

D. 50

Question 10

Three years ago the average age of a family of six members was 19 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?

Accepted Answer

A. 1 year

Question 11

The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?

Accepted Answer

D. 1020

Question 12

The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?

Accepted Answer

D. None

Question 13

The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?

Accepted Answer

B. 25

Question 14

Nine men went to a hotel. Eight of them spent Rs.3 each over their meals and the ninth spent Rs.2 more than the average expenditure of all the nine. Determine the total money spent by them?

Accepted Answer

A. Rs.29.25

Question 15

The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?

Accepted Answer

C. 18 years

Question 16

The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?

Accepted Answer

D. 34 degrees

Question 17

A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?

Accepted Answer

D. None

Question 18

A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is__________?

Accepted Answer

B. Rs.21

Question 19

Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?

Accepted Answer

C. Rs.5.00

Question 20

In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

Accepted Answer

C. Rs.5400