Math, asked by rakshamchourasia5143, 2 months ago

plz solve this no. this question plz ....

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Answered by narendrancm465

1

Answer:

15 yrs

Step-by-step explanation:

Here , The average age of 40 boys = 16 years.

Total age of 40 boys initially = 16 × 40 = 640 years

Age of replaced boy = 17 years

Total age of 39 boys = 640 – 17 = 623 years

New total age = 40 × 15.95 = 638 years

∴ Age of new boy = 638 – 623 = 15 years

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