Question

A period of 4 hours 30 min is what per cent of a day? (a)$18\frac{3}{4}\%$ (b)$20\%$ (c)$16\frac{2}{3}\%$ (d)$19\%$

Answer 1

4 hours 30 min = 4$\frac{1}{2}$=$\frac{9}{2}$ hours $\therefore$ $\%$ of a day = $\frac{9}{2}$ $\times$ $\frac{100}{24}$$\%$ = $\frac{75}{4}$$\%$=$18\frac{3}{4}$$\%$