Jambmaths question:
A cinema hall contains a certain number of people. If 22½% are children,47½ %are men and 84 are women, find the number of men in the hall
Option A:
63
Option B:
84
Option C:
113
Option D:
133
Jamb Maths Solution:
$\begin{align} & \begin{array}{*{35}{l}} Let\text{ }the\text{ }percentage\text{ }of\text{ }women\text{ }in\text{ }the\text{ }Hall\text{ }bex \\ The\text{ }total~is \\\end{array} \\ & 100percent=22\tfrac{1}{2}percent+47\tfrac{1}{2}percent+xpercent \\ & 100percent=70percent+xpercent \\ & xpercent=30percent \\ & That\text{ }is\text{ }30percent\text{ }of\text{ }the\text{ }people\text{ }are\text{ }women. \\ & The\text{ }numbers\text{ }of\text{ }men\text{ }are\frac{84\times 47.5percent}{30percent}=133 \\\end{align}$
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