A number if reduced by 25% becomes 225. By what percent should it be increased so that it becomes 375 ?

Answer: Option A

Let the number = x
According to the question,
$$\frac{x\times (100-25)}{100}$$   = 225
x = $$\frac{225\times 100}{75}$$
x = 300
Required percentage :
= $$\frac{(375-300)}{300}$$   × 100
= 25%