Question

Find the ratio of the first quantity to the second.

(4) 30 minutes, 1 hour

Answer 1

We have to convert the quantities to the same unit.
1 h = 60 min
∴ Ratio of the first quantity (30 min) to the second quantity (60 min) $=\frac{\mathrm{First}\mathrm{quantity}}{\mathrm{Second}\mathrm{quantity}}$
$$\begin{gathered} =\frac{30}{60} \\ =\frac{30÷30}{60÷30} \\ =\frac{1}{2} \\ =1:2 \end{gathered}$$