Question

If 20 metres of cloth costs Rs 3600, find the cost of 16 m of cloth.

Answer 1

Cost of 20 metres of cloth $=$ Rs 3600
$\therefore$ Cost of 1 metre of cloth $=\frac{\text{cost of}20\text{metres of cloth}}{20}=\frac{3600}{20}$ $=$ Rs 180
$\therefore$ Cost of 16 metres of cloth $=$ Cost of 1 metre of a cloth $\times 16$ $=180\times 16=$ Rs 2880
$\therefore$ The cost of 16 metres of cloth is Rs 2880