Question:
Find the cost of $3 \frac{2}{5}$ metres of cloth at Rs $63 \frac{3}{4}$ per metre.
Solution:
Cost of $1 \mathrm{~m}$ of cloth $=₹ 63 \frac{3}{4}$
So, cost of $3 \frac{2}{5} \mathrm{~m}$ of cloth
$=63 \frac{3}{4} \times 3 \frac{2}{5}$
$=\frac{255}{4} \times \frac{17}{5}$
$=₹ 216 \frac{3}{4}$
So, the cost of $3 \frac{2}{5} \mathrm{~m}$ of cloth is ₹ $216 \frac{3}{4}$.