A number when increased by 50 %, gives 3720. The number is:

Correct option is B

Given:

A number when increased by 50 %, gives 3720

Solution:

let's assume the original number is x.

xxWhen the number is increased by 50%, the new value becomes:

​$$x+0.5x=1.5x$$​​

According to the problem, this new value is 3720:

$$1.5x=3720$$ 

$$x = \frac{3720}{1.5}$$ 

$$x = 2480$$ 

So, the original number is 2480.