Question

If blueberries cost $4.00 per pound, how many pounds of blueberries can you buy for $1.00?

Answer 1

If x is the number of berries you can buy with 1 dollar,

1 pound of blueberries = $4.00

x pound of berries = $1.00

Lets set up a proportion- because these are directly proportional- when there is more pounds of berries, it will cost more.

$\frac{1}{4.00} = \frac{x}{1.00}$

Cross multiply

4x=1

Divide both sides by 4 to isolate x

x=1/4 or $0.25