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The average of 36 numbers is 20. If three numbers, 15, 20 and 25 are removed then the average of the remaining numbers is

A22

B18

C21

D20

Answer:

D. 20

Read Explanation:

Average of 36 number is 20. Total of 36 number = 20 × 36 = 720 Now, 720 - 15 - 20 - 25 = 660 New Average = 660/33 = 20

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