Question

the average of 20 number is 15 and the average of first 5 is 12. the average of rest is

Answer 1

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Answer 2

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Here is the solution:

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Find the sum of the 20 numbers:

Average of the 20 numbers = 15

Sum of the 20 numbers = 15 x 20 = 300

Find the sum of the first 5 numbers:

Average of the 5 numbers = 12

Sum of the 5 numbers = 12 x 5 = 60

Find the sum of the rest of the numbers:

Sum of the 15 numbers = 300 - 60 = 240

Average of the 15 numbers = 240 ÷ 15 = 16

Answer: The average of the 15 numbers is 16