Question

Sum of two nos is 72 and their lcm is 160 . Find out all possible pairs.

Answer 1

These two numbers must be a multiple of 8.

We begin by listing all the multiples of 8.

They are as follows :

8, 16, 24, 32, 40, 48, 56, 64...

The possible sums that give 72 are :

1.) 40 + 32 = 72

2.) 24 + 48 = 72

3.) 56 + 16 = 72

4.) 64 + 8 = 72

The answer is 1 since both 32 and 40 are divisible by 160.

The answer is 32 and 40.