Question

The lcm of two number is 60 the no: are in the ratio 4:5 find the sum of no:

Answer 1

LCM = 60

let 1st number be 4x

2nd no. be 5x

LCM = 4 * 5 * x

x = 60/20 = 3

1st no. = 12

2nd no. = 15

sum = 27