Question

Rafiq exercised for $\frac{2}{3}$ hour, while Rohit exercise for $\frac{3}{4}$ hour. Who exercised for a longer time?

Answer 1

To know who exercised for a longer time, we have to compare $\frac{2}{3}\mathrm{hour}\mathrm{with}\frac{3}{4}\mathrm{hour}$.
On cross multiplying:
4 $\times$ 2 = 8 and 3 $\times$ 3 = 9
Clearly, 8 < 9
$\therefore$ $\frac{2}{3}\mathrm{hour}<\frac{3}{4}\mathrm{hour}$
Hence, Rohit exercised for a longer time.