Average of 1185,1580,1975 is MCQ with Answer and Explanation

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Average of 1185,1580,1975 is

A. 1590

B. 1580

C. 1575

D. 1570

Answer: Option B

Solution (By JKExamLibrary)

4740/3=1580.

This question belongs to: Maths Average

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Question #1

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The average of 45 numbers is 50. If 5 numbers average 60 are added, new average of 50 numbers?

A. 50.5

B. 52

C. 49

D. 51

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Correct Answer: Option D

Explanation:
Total45=2250. Added=300. Total2550/50=51.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 1210. If average of 9 is 1205, average of remaining 6?

A. 1215

B. 1217.5

C. 1220

D. 1218

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Correct Answer: Option B

Explanation:
Sum15=18150. Sum9=10845. Remaining=7305. Average=1217.5.

This question belongs to: Maths Average

Question #3

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The average of 4 numbers is 21. If the average of first two numbers is 18, what is the average of the last two numbers?

A. 24

B. 23

C. 21.5

D. 22

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Correct Answer: Option A

Explanation:
Sum of all =4×21=84. Sum of first two =2×18=36. Sum of last two =84-36=48. Average of last two =48/2=24.

This question belongs to: Maths Average

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