Question

When a number is increased by 50% of itself, the result is 30. What is that number?

Answer 1

(B) 20

Explanation:

Let the required number be x.

Therefore,

`x + 50\% \: of \: x = 30 \\ \\ x + 0.50 x= 30 \\ \\ 1.5x = 30 \\ \\ x = (30)/(1.5) \\ \\ x = (300)/(15) \\ \\ x = 20`

Answer 2

Explanation:

x+50%x=30

150%=30

1.5x=30

x=20

B!!!