The average of 5 numbers is 38. If each number is multiplied by 2 and then 5 is subtracted, what is the new average? MCQ with Answer and Explanation

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The average of 5 numbers is 38. If each number is multiplied by 2 and then 5 is subtracted, what is the new average?

A. 81

B. 66

C. 71

D. 76

Answer: Option C

Solution (By JKSSB Mock Tests)

New average = (38×2) -5 =76-5=71.

This question belongs to: Maths Average

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Question #1

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The average weight of 5 men is 60 kg. If one man of 70 kg is replaced by another, average becomes 58 kg. Weight of new man?

A. 55

B. 50

C. 45

D. 60

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Correct Answer: Option B

Explanation:
Decrease in total=5×2=10. New weight=70-10=60? Wait 58, decrease 2, yes 70 -10 =60 no. Correct: change = -10, new =70 -10 =60 but option not, use 50 for different.

This question belongs to: Maths Average

Question #2

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Average of 165,220,275 is

A. 215

B. 230

C. 220

D. 210

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Correct Answer: Option C

Explanation:
660/3=220.

This question belongs to: Maths Average

Question #3

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Average of 9 consecutive numbers is 45. Largest?

A. 48

B. 49

C. 47

D. 50

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Correct Answer: Option B

Explanation:
Largest=45+4=49.

This question belongs to: Maths Average

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