Solving One Variable Equations: Check Your Answers!

A store sells pencils for $0.50 each. If you buy x pencils and spend $7.50, how many pencils did you buy? Check your solution by calculating the total cost.

• 20

• 10

• 25

• 15

Maria has 3 times as many marbles as John. If John has x marbles and together they have 48 marbles, how many marbles does John have? Verify your answer by adding their marbles together.

• 8

• 16

• 20

• 12

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. If you paid $35 for your rental, how many miles did you drive? Confirm your solution by calculating the total cost based on miles driven.

• 120 miles

• 100 miles

• 50 miles

• 75 miles

In a classroom, the number of boys is 5 less than twice the number of girls. If there are x girls and a total of 25 students, how many girls are in the class? Check your solution by adding the number of boys and girls.

• 8

• 10

• 15

• 12

A recipe requires 2 cups of flour for every x cookies made. If you want to make 24 cookies and you have 6 cups of flour, how many cookies can you make? Verify your answer by calculating the total flour used.

• 18 cookies

• 12 cookies

• 30 cookies

• 24 cookies

A book costs $15, and you have x dollars. If you want to buy 3 books, how much money do you need? Check your solution by calculating the total cost of the books.

• 75 dollars

• 30 dollars

• 45 dollars

• 60 dollars

The length of a rectangle is 4 meters more than its width. If the width is x meters and the perimeter is 28 meters, what is the width? Confirm your answer by calculating the perimeter with your found dimensions.

• 6 meters

• 3 meters

• 5 meters

• 7 meters

A concert ticket costs $50, and you have x tickets. If you spent $200, how many tickets did you buy? Verify your solution by calculating the total cost of the tickets.

• 3

• 2

• 4

• 5

A swimming pool is filled with water at a rate of 5 liters per minute. If it takes x minutes to fill the pool and the total volume is 150 liters, how long does it take to fill the pool? Check your solution by calculating the total volume filled in x minutes.

• 20 minutes

• 40 minutes

• 25 minutes

• 30 minutes

A farmer has a total of 120 apples. If he sells x apples and has 30 apples left, how many apples did he sell? Verify your answer by adding the apples sold to the apples left.

• 100

• 45

• 60

• 90