Solving Real-Life Multi-Step Equations: Combine & Inverse

A store sells pencils for $2 each and erasers for $1 each. If you buy a total of 10 items and spend $16, how many pencils and erasers did you buy?

• 7 pencils and 3 erasers

• 4 pencils and 6 erasers

• 6 pencils and 4 erasers

• 5 pencils and 5 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 15 marbles and Maria has 15 marbles.

• John has 12 marbles and Maria has 18 marbles.

• John has 10 marbles and Maria has 20 marbles.

A recipe requires 3 cups of flour and 2 cups of sugar. If you want to make 4 batches of the recipe, how many cups of flour and sugar do you need in total?

• 8 cups of flour and 4 cups of sugar

• 15 cups of flour and 10 cups of sugar

• 10 cups of flour and 6 cups of sugar

• 12 cups of flour and 8 cups of sugar

In a class, the number of boys is 5 more than twice the number of girls. If there are a total of 35 students in the class, how many boys and girls are there?

• 20 boys and 15 girls

• 15 boys and 20 girls

• 30 boys and 5 girls

• 25 boys and 10 girls

A gardener is planting flowers in rows. If each row has the same number of flowers and there are 4 rows with a total of 48 flowers, how many flowers are in each row?

• 8

• 15

• 12

• 10

A book costs $15 and a magazine costs $5. If you buy a total of 6 items and spend $60, how many books and magazines did you buy?

• 4 books and 2 magazines

• 3 books and 3 magazines

• 2 books and 4 magazines

• 5 books and 1 magazine

Tom has 3 times as many stickers as Lisa. If Lisa has y stickers and together they have 48 stickers, how many stickers does each person have?

• Lisa has 20 stickers and Tom has 28 stickers.

• Lisa has 15 stickers and Tom has 33 stickers.

• Lisa has 10 stickers and Tom has 38 stickers.

• Lisa has 12 stickers and Tom has 36 stickers.

A swimming pool is filled with water at a rate of 10 gallons per minute. If it takes 2 hours to fill the pool, how many gallons of water does the pool hold?

• 1000 gallons

• 1500 gallons

• 800 gallons

• 1200 gallons

A school is planning a field trip. The cost per student is $25, and there are 40 students going. If the school has $600 budgeted for the trip, how much more money do they need?

• $400

• $500

• $300

• $200