Question

If a worker earns $Rs540$ in $15days$.How much will he earn in $7days?$

Answer 1

By unitary method :

Amount worker earns in $15$days$=Rs540$

Amount worker earns in one day$=\frac{540}{15}=36Rs$

Amount worker earns in $7$days$$\begin{gathered} =7\times 36 \\ =Rs252 \end{gathered}$$

Hence amount worker earns in $7$days is $Rs252$.