# Pre-Algebra

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If 4 liters of motor oil cost \$3.88, what is the price for 1 liter? I'm supposed yo set up proportions. This is how I set it up:

\$3.88/4 liters • 1 liter/p
p= the price for 1 liter

Please tell me if I set it up right and how to solve.

• Pre-Algebra -

You're close. But you need the price as the numerator and the gallons as the denominator.

3.88/4 = p/1

Cross multiply.

4p = 3.88
p = 3.88 / 4
p = ?

• Pre-Algebra -

Thank you, Ms. Sue!

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