Ratios and Proportions 1 & 3 Study Guide

What percent of 80 is 20? Select the percent AND the fraction that represents the percent.

• 2/5

• 25%

• 40%

• 1/4

The store paid $6.25 for a book and sold it for $8.75. What is the profit as a percent of the cost to the store?

Hint: percent increase

• 60%

• 71%

• 40%

• 4%

The price of dinner was $25.90. The sales tax was 7%. The server was given a 12% tip (calculated after tax was added). What was the TOTAL cost of the meal with tax AND tip?

• $31.04

• $3.33

• $27.71

• $5.14

The number of apples in a box decreased from 125 to 100. What is the percent decrease of the number of apples in the box? Hint: Percent of change. Select TWO.

• +20%

• 20% increase

• 20% decrease

• -20%

The table shows the percentage of automobile sales for various makes of cars. If a total of 2500 cars were sold, how many cars of Brand B were sold? Hint: is/of = %/100

• 12,500

• 80%

• 50,000

• 500

If 25% of a number is 18.5, what is the original number? Hint: is/of = %/100

• 4.625

• 74

• 135

• 18.5

In Mrs. Aguilar's class, 6/20 of her class speak a second language. Of the 6/20 that speaks a second language, 2/5 of those students speak Spanish. What percentage of her class speaks Spanish? Hint: what does "of" mean? Simplify your answer.

• .12

• .75

• 75%

• 12%

Superman can fly from New York to Las Vegas in 30 minutes. The distance from New York to Las Vegas is approximately 2530 miles. How many miles per hour can Superman fly?

• 5060 miles per hour

• 1265 miles per hour

• 84.33 miles per hour

Daisy is baking a cake. The recipe calls for 1/2 pounds of flour for every 1/4 cup of sugar. How many pounds of flour should Daisy use for 1 cup of sugar?

• 1/2 pounds of flour

• 3/4 pounds of flour

• 1 1/5 pounds of flour

• 2 pounds of flour

Daniel went to the store and bought 3 1/2 pounds of chicken for $14.00. What was the cost per pound of the chicken? Round your answer to the nearest cent, if necessary.

• $16 per pound

• $49 per pound

• $4.00 per 1 pound

• $3.50 per pound