Question

If 40% of a number is added in other number then it becomes 125% of itself.What will be the ratio of 1st and 2nd number ?

Answer 1

Answers

Let us say a and b are the numbers. 
40% of a + b = 125 % a 
that means 
(40 / 100) * a + b = (125 / 100) * a 
0.4a + b = 1.25a 
b = 1.25a - 0.4a 
b = 0.85a 
b = (85 / 100) * a 
(a / b) = (100 / 85) 

So the ratio will be 100:85 or 20:17 or even 0.85:1.

_______________________________________________________________

Let the number be x and the other number be y
0.4x + y = 1.25x 
y = 0.85x