A number when increased by 40%, gives 3990. The number is:

Correct option is C

Given:

Increased number = 3990

Increase = 40%

Solution:

Let original number be x

Then,

​$$x \times \left(1 + \frac{40}{100}\right) = 3990$$​​

​$$x \times 1.4 = 3990$$​​

x = $$\frac{3990}{1.4}$$​ = 2850

Thus, The number is 2850