Question

A number is divided into two parts one part being 4times the other. The difference between the two parts is 15.what is the number?

Answer 1

let the first part be x.

therefore,the second part is 4x.

4x-x=15

3x=15

x=15/3

x=5

thus, the first part is 5

and second part

=4x

=4*5

=20

hence, the number is 520.