Solving Equation Word Problems

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

WRITE AN EQUATION
Lilli spent half of her weekly allowance playing mini-golf. To earn more money her parents let her wash the car for $4. What is her weekly allowance if she ended with $12?

• -x/2 + 4 = 12

• x/2 - 4 = 12

• 12 - 4 = x

• 12 - 4 = -x/2

WRITE AN EQUATION
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?

• 4x=472

• 9x=472

• 4+9x=472

• 4+x=472

After paying $5.12 for a salad, Kamauri has $27.10. How much money did he have before buying the salad?

• n + $5.12 = $27.10

• n - $5.12 = $27.10

• n - $5.12 = -$27.10

• $5.12 - n = $27.10

Lisa is cooking muffins. The recipe calls for 7 cups of sugar total. She has already put in 2 cups. How many more cups does she need to put in?

• 7 - n = 2

• 2 - n = 7

• 2 + n = 7

• 7 + n = 2

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

In 2010, a tree was 8 feet tall. In 2011 the tree was 14 feet tall. Write an equation and find how many feet f the tree grew. Write an equation to solve this problem. Use f as your variable.

• f + 8 = 14

• f - 8 = 14

• f/8 = 14

• 8f=14

Working together, Joy and Steve collected 53 pounds of aluminum cans for recycling. If Joy collected 20 pounds, find the number of pounds, x, that Steve collected. Using x as your variable write an equation to solve.

• 20x=53

• x-20=53

• x-53=20

• x+20=53

WRITE AN EQUATION
You bought a magazine for $5 and four
erasers. You spent a total of $29. How
much did each eraser cost?

• 5 + x = 29

• -5 - 4x = -29

• 5x = 29

• 29 - 5 = -4x

Marcella and Susie are running a race. Marcella runs at a rate of 15 feet per second while Susie only runs at a rate of 12 feet per second. If Susie gets a 48 feet head start, how long will it take for Marcella to pass her?

• 15x + 12x > 48, x > 16/9

• 15 + x > 12x + 48, x < -3

• 15x < 12x + 48, x < 16

• 15x > 12x + 48, x > 16