Solving Real-World Problems with Equations for 7th Grade

A store sells pencils for $0.50 each. If you buy x pencils, how much do you spend? Write an equation to represent the total cost and solve for 10 pencils.

• $5.00

• $2.00

• $7.50

• $10.00

Maria has 3 times as many marbles as John. If John has y marbles, write an equation to express the number of marbles Maria has and find out how many marbles Maria has if John has 5 marbles.

• 20

• 10

• 15

• 25

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. Write an equation to represent the total cost C for driving m miles and calculate the cost for driving 100 miles.

• $50

• $25

• $35

• $40

The perimeter of a rectangle is 50 meters. If the length is 5 meters more than the width, write an equation to find the width and solve for it.

• 15 meters

• 20 meters

• 10 meters

• 5 meters

A school is planning a field trip. The cost per student is $15, and there are x students attending. Write an equation for the total cost T and find the total cost for 30 students.

• The total cost for 30 students is $4500.

• The total cost for 30 students is $300.

• The total cost for 30 students is $600.

• The total cost for 30 students is $450.

A gardener is planting flowers in rows. If each row has 8 flowers and there are r rows, write an equation to find the total number of flowers F and calculate F for 6 rows.

• 48

• 40

• 56

• 32

A bike shop sells bikes for $200 each. If they sell b bikes, write an equation for the total revenue R and find the revenue if they sell 15 bikes.

• 3500

• 2500

• 3000

• 1800

The sum of two numbers is 50. If one number is x, write an equation for the other number and solve for x if the first number is 20.

• 30

• 40

• 25

• 15

A recipe requires 2 cups of flour for every 3 cups of sugar. Write an equation to represent the relationship between flour f and sugar s, and find how much flour is needed for 9 cups of sugar.

• 10 cups of flour

• 8 cups of flour

• 6 cups of flour

• 4 cups of flour

A train travels at a speed of 60 miles per hour. Write an equation to find the distance d traveled in t hours and calculate the distance for 3 hours.

• 120 miles

• 240 miles

• 90 miles

• 180 miles