A field is surveyed and found to have 240 wild flowers in a variety of colors : red, yellow, violet and white. There are 60 yellow flowers. One third of the rest of the flowers are white, $40\%$ are red and the rest is violet. What is the percentage of yellow flowers ?

Question

$\begin{array}{1 1} (a)\; 20\% \\ (b)\; 25 \% \\ (c)\;30\% \\ (d)\; 35 \% \end{array}$