Question

If one-third of one-fourth of a number is 15, then find the three-tenth of that number.

• A. 35
• B. 43
• C. 53
• D. 54

Answer 1

The correct option is D 54

Let the number be $x$

Then, $\frac{1}{3}$ of $\frac{1}{4}$ of $x$ = 15,
$\Rightarrow \frac{1}{3}\times (\frac{1}{4}\times x)=15$
$\Rightarrow \frac{x}{12}=15$
$\Rightarrow x=15\times 12\Rightarrow x=180$

So, three-tenth of this number is,
$(\frac{3}{10}\times 180)=54$.