The average marks of 12 students is 72. If one student scored 84 marks, what is the total marks of the remaining students? MCQ with Answer and Explanation

Question

The average marks of 12 students is 72. If one student scored 84 marks, what is the total marks of the remaining students?

A. 744

B. 720

C. 780

D. 768

Answer: Option C

Solution (By JKSSB Mock Tests)

Total marks = 12×72 = 864. Remaining students' marks = 864−84 = 780.

This question belongs to: Maths Average

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Question #1

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A cricketer has average 30 after 10 innings. How many runs to score in 11th to make average 32?

A. 52

B. 50

C. 48

D. 55

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Correct Answer: Option A

Explanation:
Total after 11 =11×32=352. Runs in 10=300. Required=52.

This question belongs to: Maths Average

Question #2

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Average of 50 and 60 is 55, average of 60 and 70 is 65, average of 50,60,70 is

A. 58.33

B. 59

C. 60

D. 61

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Correct Answer: Option C

Explanation:
Sum=180. Average=60.

This question belongs to: Maths Average

Question #3

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Average height of 30 boys 160 cm. If 5 more with average 170 cm, new average?

A. 161.43

B. 160

C. 163

D. 162

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Correct Answer: Option A

Explanation:
Total old=4800. New=850. Total 5650 /35≈161.43.

This question belongs to: Maths Average

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