New Concept: Ratio Word Problems

• Rate is a ratio of two measures. The word "per" is often associated with rates.

• Here are some real-world situations where rates are used • finding gas mileages. • finding total wages given an hourly salary. • finding athletes’ speeds.

• In this lesson, we will be solving real world problems using rates.

If Mr. Gomez drives his car at an average speed of 55 miles per hour, how far will he drive in 3 hours?

Why is it important to include the units of measure and time in the ratio box?

The labels on the ratio box will help us confirm what unit the answer represents. Since the unknown value d is in the distance (mi) row, we know that the answer is 165 miles.

The average of four numbers is 25. If three of the numbers are 16, 26, and 30, what is the fourth number?

Tyrone is buying refreshments for the next Math Club meeting. Brand A cranberry juice is on sale at $3.20 for a 64-fl oz bottle. Brand B costs $1.19 for a 17-fl oz bottle. Which brand is the better buy?