Isolating Variables: Solving Equations for 7th Graders

A store sells pencils for $x each and erasers for $2 less than the price of a pencil. If you buy 5 pencils and 3 erasers for $20, what is the price of one pencil?

• 4.00

• 5.75

• 2.50

• 3.25

Maria has $x and her brother has $10 more than her. Together, they have $50. How much money does Maria have?

• 20

• 30

• 25

• 15

A recipe requires $x cups of flour and $3 less than that in sugar. If the total amount of flour and sugar used is 9 cups, how much flour is needed?

• 4 cups

• 5 cups

• 3 cups

• 6 cups

A car rental company charges $x per day and $10 for insurance. If a customer pays $70 for 3 days, what is the daily rental rate?

• 15

• 20

• 30

• 25

A gardener has $x plants and buys 4 more. If he now has 12 plants, how many plants did he start with?

• 14

• 10

• 6

• 8

A book costs $x and a magazine costs $3 less than the book. If you buy 2 books and 3 magazines for $30, what is the cost of one book?

• 7.8

• 10

• 8.2

• 5.5

In a game, player A scores $x points and player B scores $5 more than player A. If their total score is 45 points, how many points did player A score?

• 30

• 20

• 25

• 15

A concert ticket costs $x and a VIP pass costs $15 more. If you buy 2 tickets and 1 VIP pass for $85, what is the price of one ticket?

• 20.00

• 25.00

• 30.00

• 23.33

A farmer has $x chickens and buys 6 more. If he now has 30 chickens, how many did he start with?

• 20

• 24

• 18

• 12