The fractions 1/3 ,4/7 and 2/5 written in ascending order given by -

Answer: Option C

$$\begin{array}{rl}& \frac{1}{3}\text{,}\frac{4}{7},\frac{2}{5}\\ & \frac{1}{3}=0.33,\\ & \frac{4}{7}=0.5,\\ & \frac{2}{5}=0.4\\ & \frac{1}{3}<\frac{2}{5}<\frac{4}{7}\end{array}$$