Question

Mark (✓) against the correct answer
A number increased by 20% gives 30. The number is

(a) 150
(b) 6
(c) 25
(d) 60

Answer 1

(c) 25

Let the number be x. Then, we have:
120% of x = increased number
⇒ 30 = $\left(x\times \frac{120}{100}\right)$
⇒ 30 = $\left(\frac{6x}{5}\right)$
⇒ x = $\left(30\times \frac{5}{6}\right)=25$
Hence, the required number is 25