Question:
The cost of $7 \frac{2}{3}$ metres of rope is Rs $12 \frac{3}{4}$. Find its cost per metre.
Solution:
The cost of $7 \frac{2}{3}$ metres of rope is Rs $12 \frac{3}{4}$.
$\therefore C$ ost per metre $=12 \frac{3}{4} \div 7 \frac{2}{3}$
$=\frac{51}{4} \div \frac{23}{3}$
$=\frac{51}{4} \times \frac{3}{23}$
$=\frac{153}{92}$
$=\operatorname{Rs} 1 \frac{61}{92}$
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