If 120 is 20% of a number, then 120% of that number will be :

Answer: Option D

Let the number = x
According to the question,
x × $$\frac{20}{100}$$ = 120
x = 600
Required answer
= 600 × $$\frac{120}{100}$$ = 720
Alternate
20% represents → 120
                    1% → $$\frac{120}{20}$$
So, 120% = $$\frac{120}{20}$$ × 120
                 = 720