Average of 8 numbers 750. If average of 5 is 745, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 750. If average of 5 is 745, average of remaining 3?

A. 760

B. 758.33

C. 757

D. 755

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum8=6000. Sum5=3725. Remaining=2275. Average≈758.33.

This question belongs to: Maths Average

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Question #1

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The average marks of a student in 5 subjects is 80. If he scores 90 in the sixth subject, what is his new average?

A. 81.67

B. 80.5

C. 82.5

D. 81.33

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Correct Answer: Option A

Explanation:
Sum of 5 =5×80=400. Sum of 6 =400+90=490. New average =490/6=81.666... ≈81.67.

This question belongs to: Maths Average

Question #2

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Average of 10 numbers 1030. If average of 6 is 1025, average of remaining 4?

A. 1036

B. 1037.5

C. 1035

D. 1040

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Correct Answer: Option B

Explanation:
Sum10=10300. Sum6=6150. Remaining=4150. Average=1037.5.

This question belongs to: Maths Average

Question #3

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Average of 165,220,275 is

A. 210

B. 230

C. 220

D. 215

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Correct Answer: Option C

Explanation:
660/3=220.

This question belongs to: Maths Average

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