There are 40 oranges and 10 peaches in a bin. If only oranges are to be removed from the bin so that the probability of randomly drawing an orange becomes $\large\frac{3}{5}$ how many oranges must be subtracted from the bin ?

Question

$\begin{array}{1 1} (a)\;9 \\ (b)\;7 \\ (c)\;18 \\(d)\;25 \end{array} $