Question

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

• A. 8550
• B. 1425
• C. 2850
• D. 5700

Answer 1

Answer:

C. 2850

According to the problem, when the number $x$ is increased by $40\%$, it gives $3990$. This can be expressed as:

$x + 40\% \text{ of } x = 3990$

Converting the percentage to a decimal:

$x + 0.40x = 3990$

$1.40x = 3990$

To solve for $x$, we divide both sides by $1.40$:

$x = \frac{3990}{1.40}$

$x = 2850$

The number is 2850.