Solving Real-Life Linear Equations: Grade 8 Quiz

A store sells pencils for $2 each and erasers for $3 each. If you buy a total of 10 items and spend $24, how many pencils and erasers did you buy?

• 5 pencils and 5 erasers

• 6 pencils and 4 erasers

• 7 pencils and 3 erasers

• 4 pencils and 6 erasers

Maria has twice as many marbles as John. If John has x marbles and together they have 30 marbles, how many marbles does each person have?

• John has 5 marbles and Maria has 25 marbles.

• John has 10 marbles and Maria has 20 marbles.

• John has 15 marbles and Maria has 15 marbles.

• John has 12 marbles and Maria has 18 marbles.

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

• 50 miles

• 150 miles

• 200 miles

• 100 miles

In a school, the number of boys is 5 more than twice the number of girls. If there are g girls, write an equation to find the number of boys and solve for g if there are 35 students in total.

• 20

• 15

• 10

• 5

A gardener is planting flowers in two different sections of a garden. The first section has 3 times as many flowers as the second section. If the total number of flowers is 48, how many flowers are in each section?

• First section: 40 flowers, Second section: 8 flowers

• First section: 36 flowers, Second section: 12 flowers

• First section: 30 flowers, Second section: 18 flowers

• First section: 24 flowers, Second section: 24 flowers

A movie theater sells adult tickets for $12 and child tickets for $8. If the total revenue from selling 20 tickets is $180, how many adult and child tickets were sold?

• 5 adult tickets and 15 child tickets

• 10 adult tickets and 10 child tickets

• 8 adult tickets and 12 child tickets

• 6 adult tickets and 14 child tickets

A bike costs $150 and a helmet costs $30. If you buy a total of 5 items and spend $600, how many bikes and helmets did you buy?

• 4 bikes and 1 helmet

• 3 bikes and 2 helmets

• 5 bikes and 0 helmets

• 2 bikes and 3 helmets

In a class, the number of girls is 4 less than the number of boys. If there are b boys, write an equation to find the number of girls and solve for b if there are 28 students in total.

• 12

• 16

• 24

• 20

A recipe requires 2 cups of flour and 3 cups of sugar. If you want to make a batch that uses a total of 15 cups of ingredients, how many cups of flour and sugar do you need?

• 5 cups of flour and 10 cups of sugar

• 4 cups of flour and 11 cups of sugar

• 6 cups of flour and 9 cups of sugar

• 7 cups of flour and 8 cups of sugar

A bookstore sells novels for $10 each and magazines for $5 each. If you bought a total of 15 items and spent $100, how many novels and magazines did you buy?

• 3 novels and 12 magazines

• 7 novels and 8 magazines

• 10 novels and 5 magazines

• 5 novels and 10 magazines