Three-forth of a number is 60 more than its one-third. The number is :

Answer: Option C

Let the number be x
Then,
$$\begin{array}{rl}& \iff \frac{3}{4}x-\frac{1}{3}x=60\\ & \iff \frac{5x}{12}=60\\ & \iff x=\left(\frac{60\times 12}{5}\right)\\ & \iff x=144\end{array}$$