Solving Real-Life Linear Equations: Grade 8 Quiz

A store sells pencils for $0.50 each. If you buy x pencils and spend $6, how many pencils did you buy?

• 12

• 15

• 8

• 10

A taxi charges a flat fee of $3 plus $2 per mile. If you paid $11 for a ride, how many miles did you travel?

• 3 miles

• 2 miles

• 5 miles

• 4 miles

Maria has $20. She spends x dollars on a book. Write an equation to find out how much money she has left after the purchase.

• x - 20

• 20 * x

• 20 - x

• 20 + x

A swimming pool is being filled with water at a rate of 5 gallons per minute. If it takes 30 minutes to fill the pool, how many gallons of water does the pool hold?

• 100 gallons

• 200 gallons

• 150 gallons

• 75 gallons

A concert ticket costs $15. If you buy x tickets and spend $75, how many tickets did you buy?

• 3

• 4

• 6

• 5

A recipe requires 2 cups of flour for every 3 cups of sugar. If you have x cups of sugar and want to maintain the ratio, how many cups of flour do you need?

• (3/2) * x

• (2/3) * x

• (1/3) * x

• (4/3) * x

A car rental company charges a base fee of $50 plus $0.20 per mile driven. If you paid $70, how many miles did you drive?

• 50 miles

• 150 miles

• 100 miles

• 200 miles

A gardener plants x trees in a row. If each tree is spaced 4 feet apart and the total length of the row is 40 feet, how many trees did the gardener plant?

• 9

• 12

• 11

• 10

A book costs $12. If you have x dollars and want to buy as many books as possible, how many books can you buy with your money?

• x + 12

• x / 12

• x * 12

• x - 12

A gym charges a monthly fee of $30 plus $5 for each class attended. If you paid $60 this month, how many classes did you attend?

• 4

• 10

• 6

• 8