Question

if 40% of a number is added to another number then it becomes 125% of itself. the ratio of the second to the first number is

Answer 1

let the first number be x

and the second number be y

then 40% of x+y=125% of x

4x/10+y=5x/4;

y=5x/4-4x/10;

y=17x/20;

y/x=17/20;

therefore y:x=17:20....

thank you...