Question

A one-pound five-ounce can of hairspray costs $9.95.

Which is the cost per ounce to the nearest cent?

Answer 1

The cost per ounce is $1.99

Explanation:

We can find the cost per ounce by using proportion.

Let x be the cost of one ounce

5 ounce = $9.95

1 ounce = x

Cross-multiply

5x = $9.95

Divide both-side of the equation by 5

5x/5 = $9.95/5

At the left-hand side of the equation 5 will cancel-out 5 leaving us with x

x = $1.99

The cost per ounce is $1.99

Answer 2

$2.00 per ounce to the nearest cent

Explanation:

If one-pound five-ounce cost $9.95.

This means in a pound, there are five ounce and the cost is $9.95

If five-ounce= $9.95

Then,

the cost per ounce=cost of five-ounce/5

=$9.95/5

=$1.99

Therefore,

Cost per ounce=$1.99

Approximately to the nearest cent =$2.00