Average of 12 numbers 1270. If average of 8 is 1265, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1270. If average of 8 is 1265, average of remaining 4?

A. 1282

B. 1278

C. 1275

D. 1280

Answer: Option D

Solution (By JKExamLibrary)

Sum12=15240. Sum8=10120. Remaining=5120. Average=1280.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 6 numbers is 12. If one number is 20, find the average of the rest.

A. 11

B. 10.4

C. 9.6

D. 10

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Correct Answer: Option B

Explanation:
Sum=6×12=72. Rest sum=72-20=52. Average=52/5=10.4.

This question belongs to: Maths Average

Question #2 Report Error

Average of 9 numbers 2240. If average of 6 is 2235, average of remaining 3?

A. 2255

B. 2248

C. 2250

D. 2245

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Correct Answer: Option C

Explanation:
Sum9=20160. Sum6=13410. Remaining=6750. Average=2250.

This question belongs to: Maths Average

Question #3 Report Error

Average of 15 numbers 28. If one number 40 is replaced by 25, new average?

A. 26.67

B. 27.5

C. 28

D. 27

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Correct Answer: Option D

Explanation:
Change -15, decrease 1. New=27.

This question belongs to: Maths Average

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