The average score of 40 matches is 50. If average of first 20 is 45, average of last 20? MCQ with Answer and Explanation

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The average score of 40 matches is 50. If average of first 20 is 45, average of last 20?

A. 55

B. 48

C. 52

D. 50

Answer: Option A

Solution (By JKExamLibrary)

Total=2000. First=900. Last=1100. Average=55.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

Average of 15 numbers 2060. If average of 9 is 2055, average of remaining 6?

A. 2068

B. 2067.5

C. 2070

D. 2065

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Correct Answer: Option B

Explanation:
Sum15=30900. Sum9=18495. Remaining=12405. Average=2067.5.

This question belongs to: Maths Average

Question #2 Report Error

The average monthly income of a person for 12 months is ₹30,000. If he earned ₹36,000 in one month, the average income for the remaining 11 months is:

A. ₹30,000

B. ₹29,454.55

C. ₹29,000

D. ₹31,000

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Correct Answer: Option B

Explanation:
Total income = 12×30000 = 360000. Remaining income = 360000−36000 = 324000. Average = 324000/11 = 29454.55.

This question belongs to: Maths Average

Question #3 Report Error

If average of three numbers is 40. Two numbers average 35, third is

A. 45

B. 55

C. 50

D. 40

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Correct Answer: Option C

Explanation:
Third = 3*40 - 2*35 =120 -70=50.

This question belongs to: Maths Average

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