Question

The average age of 5 boys is 19 years. If the age of two boys is 18 years and 17 years. Find the average age of the remaining three boys.

Answer 1

Step-by-step explanation:

let a,b,c be the age of remaining 3 boys.

given age of two boys 17 & 18 years

sum of the age of two boys = 35 years

avg of 5 boys is given 19, therefore

19= (a+b+c+35)/5

a+b+c+35 = 95

a+b+c = 60 - (1)

for getting avg of three boys, divide by 3 to above eqn (1), therefore

(a+b+c)/3 = 20

therefore avg of remaining 3 boys is 20.