Question

Two third of three fourth of one fifth of a number is 15. What is 30% of that number ?

• A. 45
• B. 60
• C. 75
• D. 30
• E. None of these

Answer 1

The correct option is A 45

Let the number be x.
Then, $\frac{2}{3}\times \frac{3}{4}\times \frac{1}{5}\times x=15$
$\Rightarrow \frac{1}{10}\times x=15$
$\Rightarrow x=150$
So, 30% of $150=\frac{30}{100}\times 150=45$