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Real-Life Math -- Solution

Let's do the math:

A.) 0.5-inch ceramic

10 square inches x $0.50 per square inch = $5

That's for a bowl that will last for 100 uses. You need something that will last for 1,000 uses.

1,000 uses / 100 uses = 10

You would need 10 of these bowls. What does that do to your cost?

$5 x 10 = $50

Your cost would be $50.

B.) 0.6-inch ceramic

10 square inches x $0.75 per square inch = $7.50

1,000 uses / 125 uses = 8

You would need 8 of these bowls.

8 x $7.50 = $60

Your cost would be $60.

C.) 0.7-inch ceramic

10 square inches x $0.85 = $8.50

1,000 / 200 = 5

You would need 5 of these bowls.

5 x $8.50 = $42.50

Your cost would be $42.50

The 0.7-inch ceramic would be the most cost effective.


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