Question

A number is 5/8 times another number.If their sum is 104,find the number

Answer 1

y=5/8x

x+y = 104

x+5/8x = 104

8x+5x=104*8

13x = 104*8

x = 832/13

x = 64

Answer 2

let the number be x
5/8x + x = 104
lcm = 8
5x +8x /8 = 104
13x/8 = 104
13x= 104×8
13x = 832
divide by 13 both sides
x= 64