A student scored 75, 80, 85 in three tests. What marks should he score in fourth test to make average 82? MCQ with Answer and Explanation

A student scored 75, 80, 85 in three tests. What marks should he score in fourth test to make average 82?

A. 90

B. 88

C. 92

D. 85

Answer: Option B

Total for 4 tests =4×82=328. Sum of three=240. Required=328-240=88.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 4 numbers is 28. If one number is 32, find the average of the remaining 3.

A. 27

B. 28

C. 26.67

D. 26

Correct Answer: Option C

Explanation:
Sum=4×28=112. Remaining sum=112-32=80. Avg=80/3=26.67.

This question belongs to: Maths Average

Question #2 Report Error

If average of 5 numbers is 36 and average of 3 is 30, average of remaining 2?

A. 42

B. 45

C. 40

D. 48

Correct Answer: Option B

Explanation:
Sum5=180. Sum3=90. Remaining=90. Average=45.

This question belongs to: Maths Average

Question #3 Report Error

Average of first 10 multiples of 9 is

A. 45

B. 54.5

C. 49.5

D. 50

Correct Answer: Option C

Explanation:
9*(1+10)/2 =9*5.5=49.5.

This question belongs to: Maths Average