Question

A number is 42 more than the average of its half ,one-third and one -fifteenth.find the numbers

Answer 1

Ans : 60

Solu:-

let the number be x

according to question

x =( ((1/2)+(1/3)+(1/15))/3)+42
x-42= ((1/2)+(1/3)+(1/15))/3)
x-42 = (27x/90)
90x-3780 = 27x
63x = 3780
x = 60

Answer 2

Let the no. be x.
Now, according to question,
x =42 + (1/2+1/3+1/15)/3
x =42+ (27/30)/3
x =42+ 3/10
x = (420+3)/10
x = 423/10
x = 42.3