Average of 12 numbers 220. If average of 8 is 215, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 220. If average of 8 is 215, average of remaining 4?

A. 225

B. 230

C. 232

D. 228

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum12=2640. Sum8=1720. Remaining=920. Average=230.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average speed for round trip at 40 km/h going and 60 km/h returning?

A. 50 km/h

B. 45 km/h

C. 55 km/h

D. 48 km/h

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Correct Answer: Option D

Explanation:
2*40*60/(40+60)=48 km/h.

This question belongs to: Maths Average

Question #2

Average of 40 numbers 55. If 10 numbers average 65, average of remaining 30?

A. 53

B. 51.67

C. 50

D. 52

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Correct Answer: Option B

Explanation:
Total=2200. 10=650. Remaining=1550/30≈51.67.

This question belongs to: Maths Average

Question #3

Average of 8 numbers 2450. If average of 5 is 2445, average of remaining 3?

A. 2457

B. 2455

C. 2458.33

D. 2460

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Correct Answer: Option C

Explanation:
Sum8=19600. Sum5=12225. Remaining=7375. Average≈2458.33.

This question belongs to: Maths Average

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