Proportions Word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you set up a proportion to solve a word problem?

Back

Identify the two ratios involved in the problem and set them equal to each other.

Front

If a recipe calls for 2 cups of sugar for every 3 cups of flour, how would you express this as a proportion?

Back

2/3 = x/y, where x is the amount of sugar and y is the amount of flour used.

Front

What is the cross-multiplication method in solving proportions?

Back

Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio and setting the two products equal.

Front

If 1.5 cups of milk is needed for 3 cups of flour, how much milk is needed for 5 cups of flour?

Back

2.5 cups of milk.

Front

Danielle used 8 centimeters of tape for 4 presents. How much tape is used per present?

Back

2 centimeters of tape per present.

Front

If Carol practices 17 hours in 2 weeks, how many hours does she practice in 5 weeks?

Back

42.5 hours.

Front

What is the formula to find the total amount of a resource used over time?

Back

Total amount = (amount used per time period) x (number of time periods).

Front

If a 12-ounce bottle lasts 16 weeks, how long will an 18-ounce bottle last?

Back

24 weeks.

Front

Sasha jarred 25 liters of jam in 5 days. How much jam does she jar in 1 day?

Back

5 liters of jam per day.