Average of 8 numbers 36. If each increased by 3, new average? MCQ with Answer and Explanation

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Average of 8 numbers 36. If each increased by 3, new average?

A. 39

B. 37

C. 40

D. 36

Answer: Option A

Solution (By JKSSB Mock Tests)

39.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 1780. If average of 6 is 1775, average of remaining 4?

A. 1790

B. 1786

C. 1787.5

D. 1785

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Correct Answer: Option C

Explanation:
Sum10=17800. Sum6=10650. Remaining=7150. Average=1787.5.

This question belongs to: Maths Average

Question #2

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Average speed for equal distances at 40 km/h and 60 km/h is

A. 48 km/h

B. 45 km/h

C. 55 km/h

D. 50 km/h

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Correct Answer: Option A

Explanation:
Harmonic mean for equal distance: 2×40×60 / (40+60) = 4800/100 = 48 km/h.

This question belongs to: Maths Average

Question #3

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The average salary of 10 employees is Rs 5000. If a new employee joins with salary Rs 7000, what is the new average?

A. 5220

B. 5150

C. 5181.82

D. 5200

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Correct Answer: Option C

Explanation:
Total =10×5000=50000. New total =57000. New average =57000/11=5181.82.

This question belongs to: Maths Average

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