Question

A 600g packet of biscuits costs $2.40. Calculate How much would a 200g packet cost?

Answer 1

$0.8

Explanation:

There is a relation of direct proportion between quantity of biscuit and its cost.

Let 200 g biscuit will cost $x.

Therefore,

`(600)/(2.40) = (200)/(x) \\ \\ x = (2.40 * 200)/(600) \\ \\ x = 0.4 * 2 \\ \\ x = 0.8`