PA Chapter 5 Test

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you solve for a variable in a proportion?

Back

To solve for a variable in a proportion, cross-multiply the terms and then isolate the variable. For example, if a/b = c/d, then ad = bc.

Front

What is unit price?

Back

Unit price is the cost per single unit of measure, such as per ounce or per item, which helps compare prices of different sizes or quantities.

Front

How do you calculate the unit price?

Back

To calculate the unit price, divide the total price by the number of units. For example, if a 32 oz bottle costs $2.05, the unit price is $2.05 / 32 oz.

Front

What is the formula for finding the total amount raised in a fundraiser?

Back

Total Amount Raised = (Amount Sold / Price per Item) * Amount Received per Item.

Front

If a school receives $20 for every $75 worth of wrapping paper sold, how much wrapping paper must be sold to raise $2500?

Back

$9,375.

Front

What is the relationship between time and work rate?

Back

The relationship is that work rate multiplied by time equals the total work done. For example, if Savannah studies 3.5 pages in 0.75 hours, her rate is 3.5 / 0.75 pages per hour.

Front

How do you find the total pages studied in a given time?

Back

Total Pages = Study Rate * Total Time. If Savannah studies at a rate of 4.67 pages per hour for 3 hours, she studies 14 pages.

Front

What is the significance of cross-multiplication in solving proportions?

Back

Cross-multiplication allows you to eliminate the fractions in a proportion, making it easier to solve for the unknown variable.

Front

What does it mean to compare prices?

Back

Comparing prices involves evaluating the cost of similar items to determine which offers the best value based on unit price.