Equation Word Problems With Missing Variable

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112? 

• 14h = 112

• 14 / h = 112

• h + 14 = 112

• h - 14 = 112

Last Friday Trevon had $29. Over the weekend he received some money for cleaning the attic. He now has $41. How much money did he receive?

• 29 - n = 41

• 29 - n = 40

• 29 + n = 41

• 29 + n = 40

If one roll of masking tape costs $1.15, how many rolls can Emma buy  with $5.75?

• 1.15(5.75) = x

• 5.75x = 1.15

• 1.15x = 5.75

• x = 1.15/ 5.75

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

• A

• B

• C

• D

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

A group of 3 friends each have video games at their home.  Then each friend buys 5 more video games.  Now the three friends have a total of 30 video games.  How many video games did each friend start with?

• 3(x+5) = 30

• x(3+5) = 30

• 5(x+3) = 30

• 30(3+5) = x

Last season, I spent $2752 to see my team play 43 games.  To see each game, I had to buy a ticket and pay $10 for parking.  How much was each ticket?

• 10(x+43) = 2752

• x(10+43) = 2752

• 43(x+10) = 2752

• 2752(43+x)=10

You want to buy a new pair of shoes that costs $95.00.  You have already saved up $27.00 and you plan to save $4 per week.  How many weeks until you have enough money to buy the shoes?

• 68 weeks

• 17 weeks

• 91 weeks

• 64 weeks

You take out a loan from a bank for $3600.  You plan to pay back 300 per week.  Which equation would help you solve the number of weeks to pay back the loan?

• 3600 - 300w = 0

• -3600w + 300 = 0

• 0 - 3600 = 300w

• w + 3600 + 300 = 0