The average of 4 numbers is 30. If the numbers are in the ratio 1:2:3:4, find the largest number. MCQ with Answer and Explanation

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The average of 4 numbers is 30. If the numbers are in the ratio 1:2:3:4, find the largest number.

A. 24

B. 48

C. 36

D. 60

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum = 4×30=120. Ratio sum =1+2+3+4=10. Largest = (4/10)×120=48.

This question belongs to: Maths Average

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Question #1

Average of 20 numbers 50. If each number is doubled, new average?

A. 25

B. 75

C. 50

D. 100

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Correct Answer: Option D

Explanation:
New average =100.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 810. If average of 9 is 805, average of remaining 6?

A. 820

B. 815

C. 818

D. 817.5

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Correct Answer: Option D

Explanation:
Sum15=12150. Sum9=7245. Remaining=4905. Average=817.5.

This question belongs to: Maths Average

Question #3

Average of 15 numbers 1310. If average of 9 is 1305, average of remaining 6?

A. 1317.5

B. 1315

C. 1320

D. 1318

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Correct Answer: Option A

Explanation:
Sum15=19650. Sum9=11745. Remaining=7905. Average=1317.5.

This question belongs to: Maths Average

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