The cost of 20 metres of ribbon is ₹335. Find the cost of each metre of it.

Given:

Total cost = ₹ 335

Total length = 20 metres

Cost of 1 metre of ribbon = ?

Cost of 1 metre of ribbon = Total cost ÷ Total length

Substituting the values in above, we get:

Cost of 1 metre of ribbon = ₹ 335 ÷ 20 metres

$= ₹ \dfrac{335}{20} \\[1em] = ₹ \dfrac{67}{4} \quad \text{[Dividing 335 and 20 by 5]} \\[1em] = ₹ 16\dfrac{3}{4} \quad \text{[Converting to mixed fraction]}$

The cost of each metre is ₹ $16\dfrac{3}{4}$.