5.4 Flashcard: Proportion Word Problems

Front

What is a proportion?

Back

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

Front

How do you find the length of an object in a scale drawing?

Back

To find the length in a scale drawing, use the scale factor to convert the actual length to the drawing length.

Front

If a scale is 1cm = 8km, how do you calculate the actual distance from a map measurement?

Back

Multiply the map measurement in cm by the scale factor (8km) to find the actual distance.

Front

What is the formula to compare unit prices?

Back

Unit Price = Total Price / Quantity.

Front

How do you determine which product is a better buy?

Back

Compare the unit prices of each product; the one with the lower unit price is the better buy.

Front

What is an exchange rate?

Back

An exchange rate is the value of one currency in relation to another currency.

Front

How do you convert currency using an exchange rate?

Back

Multiply the amount of money by the exchange rate to find the equivalent amount in the other currency.

Front

What is the relationship between ingredients in a recipe called?

Back

The relationship between ingredients in a recipe is called a ratio.

Front

How do you maintain proportions when adjusting a recipe?

Back

To maintain proportions, scale all ingredients by the same factor.

Front

If a recipe calls for 1.5 cups of milk for every 3 cups of flour, what is the ratio of milk to flour?

Back

The ratio of milk to flour is 1:2.