Question

In the following question out of the four options only one is correct, write the correct answer.

The value of S in $\frac{1}{3}+S=\frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(c) $10$

(d) $0$

Answer 1

Given, $\frac{1}{3}+S=\frac{2}{5}\Rightarrow \frac{1}{3}+S-\frac{1}{3}=\frac{2}{5}-\frac{1}{3}\Rightarrow S=\frac{2}{5}-\frac{1}{3}\Rightarrow S=\frac{6-5}{15}\therefore S=\frac{1}{15}$