Equations Given a Word Problem

Ashley finds masking tape in packages of 4 rolls for $4.32. What is the cost of one roll in  the package?

• 4x = 4.32

• 4.32x = 4

• 4(4.324) = x

• 4/ 4.32 = x

Each pair of socks costs $2.50. if Ella buys 6 pairs, how much does she pay?

• 6x = 2.50

• 2.50 = 6x

• 6 = 2.50x

• 2.50(6) = x

Andrew has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Andrew needs to save to by the IPOD?

• 55 + x = 145

• 145x = 55

• 55 - x = 145

• 145 (55) = x

Two hundred seventy-six people are seated in 12 identical rows for a performance of a school play. How many people are in each row? Let p be the number of people in each row.

• p = 276 ÷ 12

• p = 276 ⋅ 12

• 276p = 12

• p = 12 + 276

A $20 t-shirt is on sale for 1⁄10 off. How much money will Sierra save if she buys the shirt on sale? Let d be the number of dollars saved.

• d = 20 ⋅ 1⁄10

• d = 1⁄10 + 20

• 20d = 1⁄10

• d = 10 ÷ 1⁄10

Sally bought three candy bars for a total of $18.00. How much did each candy bar cost? Write an equation to solve this problem. Use c as your variable.

• 18c=6

• c + 6= 18

• c +18 = 6

• 3c=18

4x = 44

• x = 40

• x = 11

• x = 48

• x = 176

Joey and four of his friends went out to eat. They decided to split the bill evenly. Each person paid $11.13. What was the total bill? Write an equation you could use to solve this equation. Use d as your variable.

• d/4=$11.13

• 4d=$11.13

• d/5=$11.13

• 5d=$11.13

Charlie has some candy. He shares ten pieces with Betsy and is left with 24 pieces. Which equation should I use to solve this problem?

• x +10 = 24

• x - 10 = 24

• 10x = 24

• x + 24 = 10

Carol’s class had 25 students on roll. After some new students join her class, the number of students increases to 36. Write an equation to determine the number of students who joined Carol's class.

• 25 + x = 36

• x – 36 = 25

• 36x = 25

• 36 + x = –25