Question

the average of ages of 10 persons in aclass was 32. when new person joins the class the average weight increases by4. find the weight of the new person added ?

Answer 1

Find the sum of the weight of 10 people:

Average age of the 10 people = 32

Sum of the age of 10 people = 32 x 10 = 320

Find the sum of the 11 people:

Average age of the 11 people = 32 + 4 + 36

Sum of the age of the 11 people = 36 x 11 = 396

Find the age of the new person:

Age of the new person = 396 - 320 = 76 years old

Answer: The new person is 76 years old.

Answer 2

Step-by-step explanation:

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