Question

Solve by making a proportion.

How much does 3.25m of silk ribbon cost if 0.8m costs $5.60?

Answer 1

Explanation:

Direct proportion

0.8 : 3.25 = 5.60: x

Product of Means = 3.25 * 5.60

Product of extremes =0.8*x

0.8*x=3.25*5.60

x = 3.25 * 5.60 / 0.8 = 3.25*56/8

x =3.25*7

x=$ 22.75