Question

A number is 2/5 times another number if there sum is 70 find the number.

Answer 1

Let one number be x

Then the second number will be : 2x/5

x + 2x/5 = 70                                 (Given)

After solving, we get

x = 50

Answer 2

let a num=x

another num=(2/5)x

sum=x+(2/5)x

70=x+(2/5)x

70=(5x+2x)/5

70=7x/5

x=50.