A is 25% less than B. B is 30% more than 120. What is the value of A?

25% =  \(\frac{1}{4}\)  & 30% =  \(\frac{3}{10}\)

Ratio of ,   A   :   B  =  3  :  4

Now , B = 120 +  \(\frac{3}{10}\) × 120 = 156

As , 4R = 156

1R = 39

Now , 3R = 3 × 39 = 117

So , value of A is 117