There are 50gems chocolate in a ball. Mary eats 4 gems from the ball per day. What is the fraction of gems she eats in 8 days?

Question

$\begin{array}{11} (a)\; \frac{4}{50} \\ (b)\; \frac{8}{50} \\ (c)\; \frac{32}{50} \\ (d)\;\frac{4}{8} \end{array}$