Question

$8$ parcels weigh $12\mathrm{kg}$. What will be the weight of $17$ parcels?

Answer 1

The weight of $8$ parcels = $12\mathrm{kg}$
$\therefore$ Weight of $1$ parcel = $\frac{12}{8}\mathrm{kg}=\frac{3}{2}\mathrm{kg}$
The weight of $17$ such parcels = $17\times \frac{3}{2}\mathrm{kg}$
= $\frac{51}{2}\mathrm{kg}=25\frac{1}{2}\mathrm{kg}$