If 1/5 of 1/4 of a number is 35, then how much is 7/8 of that number?

Answer: Option A

$$\begin{array}{rl}& x\times \frac{1}{4}\times \frac{1}{5}=35\\ & x=35\times 20\\ & x=700\\ & 700\times \frac{7}{8}=\frac{4900}{8}=612.5\end{array}$$