Question

average age of 5 friends is 14 years then y years ago the sum of their ages would be___
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Answer 1

Answer:

45

Explanation:

No. of friends = 5

average of their ages = 14

average = total age / no.

14 = total / 5

total age = 70

now, 5 years ago, decrease in age of each friend = 5 yrs

total decrease in sum of ages =5×5

= 25

Total sum of ages 5 years ago = 70-25

= 45

note: finally someone asked a relevant and good question!