Question

A labourer earns $Rs1980$ in $12$ days.
In how many days will he earn $Rs2640$?

Answer 1

In 12 days laborer earns$=Rs1980$

In 1 days laborer earn$=\frac{1980}{12}=Rs165$

Rs 165 earn by laborer in$=1day$

Rs 1 earn by laborer in$=\frac{1}{165}days$

Rs 2640 earn by laborer in$=2640\times \frac{1}{165}=16days$

Therefore in 16 days laborer will earn Rs $2640$