The average of seven consecutive odd numbers is 17. If the next three odd numbers are also included, then what will be the new average?

A20 ✓ Correct

B19

C21

D22

Correct answer: (A) 20

Explanation

The new average is 20.

Seven consecutive odd numbers with average 17 sum to 7 x 17 = 119.

The next three odd numbers are 25, 27 and 29, summing to 81.

New total = 119 + 81 = 200 over 10 numbers.

New average = 200/10 = 20.

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