Average of 8 numbers 300. If average of 5 is 295, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 300. If average of 5 is 295, average of remaining 3?

A. 307

B. 305

C. 308.33

D. 310

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum8=2400. Sum5=1475. Remaining=925. Average≈308.33.

This question belongs to: Maths Average

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Question #1

The average of 8 numbers is 34. If each number is multiplied by 1.5, what is the new average?

A. 68

B. 51

C. 34

D. 25.5

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Correct Answer: Option B

Explanation:
New average =34×1.5=51.

This question belongs to: Maths Average

Question #2

Average speed for two equal times at 30 and 50 km/h?

A. 40 km/h

B. 42 km/h

C. 38 km/h

D. 45 km/h

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Correct Answer: Option A

Explanation:
Arithmetic mean for equal time: (30+50)/2=40.

This question belongs to: Maths Average

Question #3

Average of 21, 28, 35, 42 is

A. 31.5

B. 30

C. 33

D. 32

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Correct Answer: Option A

Explanation:
Sum=126. Average=31.5.

This question belongs to: Maths Average

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