Average of 4 numbers is 50. If three are 40,45,55, fourth is MCQ with Answer and Explanation

Average of 4 numbers is 50. If three are 40,45,55, fourth is

A. 60

B. 55

C. 50

D. 65

Answer: Option A

Fourth=200-140=60.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 3 numbers is 25. If two average 20, third is

A. 25

B. 40

C. 35

D. 30

Correct Answer: Option C

Explanation:
Third =75 -40=35.

This question belongs to: Maths Average

Question #2 Report Error

The average of all numbers from 1 to 60 divisible by 5 is

A. 35

B. 30

C. 25

D. 32.5

Correct Answer: Option D

Explanation:
5 to 60. 12 numbers. Average 5*(1+12)/2=32.5.

This question belongs to: Maths Average

Question #3 Report Error

Average of 7 numbers 50. If average of 4 is 45, average of remaining 3?

A. 58

B. 57.67

C. 60

D. 55

Correct Answer: Option B

Explanation:
Sum7=350. Sum4=180. Remaining=170. Average≈56.67 approx 57.

This question belongs to: Maths Average