Example 7.54 from Prealgebra, 7.5 Systems of Measurement

Systems of Measurement: example 7.54

Dena’s recipe for lentil soup calls for $150$ milliliters of olive oil. Dena wants to triple the recipe. How many liters of olive oil will she need?

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
We will find the amount of olive oil in milliliters then convert to liters.

Triple 150 mL

Translate to algebra. $3 \cdot 150 mL$

Multiply. $450 mL$

Convert to liters. $450 mL \cdot \frac{0.001 L}{1 mL}$

Simplify. $0.45 L$

Dena needs 0.45 liter of olive oil.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

A recipe for Alfredo sauce calls for $250$ milliliters of milk. Renata is making pasta with Alfredo sauce for a big party and needs to multiply the recipe amounts by $8 .$ How many liters of milk will she need?

How did it go?

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

	Triple 150 mL
Translate to algebra.	$3 \cdot 150 mL$
Multiply.	$450 mL$
Convert to liters.	$450 mL \cdot \frac{0.001 L}{1 mL}$
Simplify.	$0.45 L$
	Dena needs 0.45 liter of olive oil.

Solution

Your turn

Solution

Your turn