Solving Real-Life Equations: Find the Unknowns!

1. Sarah has some apples. If she buys 5 more apples, she will have a total of 12 apples. Define the variable 'x' as the number of apples Sarah originally had. Write an equation to represent this situation and solve for 'x'.

• 7

• 3

• 10

• 5

2. A book costs 'y' dollars. If you buy 3 books, you spend a total of 24 dollars. Define the variable 'y' and create an equation to find the cost of one book.

• 10

• 8

• 12

• 6

3. Tom has 'z' marbles. If he gives away 8 marbles, he will have 15 marbles left. Define 'z' and write an equation to find out how many marbles Tom had originally.

• 23

• 18

• 20

• 25

4. A box can hold 'n' toys. If you have 4 boxes and they can hold a total of 32 toys, define 'n' and create an equation to find out how many toys fit in one box.

• 8

• 6

• 10

• 12

5. Lisa is saving money. If she saves 'm' dollars each week and has saved 40 dollars after 5 weeks, define 'm' and write an equation to find out how much she saves each week.

• m = 6

• m = 8

• m = 5

• m = 10

6. A car travels 'd' miles in one hour. If it travels 150 miles in 3 hours, define 'd' and create an equation to find the speed of the car in miles per hour.

• 30 miles per hour

• 75 miles per hour

• 100 miles per hour

• 50 miles per hour

7. A pizza has 'p' slices. If you eat 3 slices and have 5 slices left, define 'p' and write an equation to find out how many slices the pizza had originally.

• 7

• 6

• 10

• 8

8. A garden has 'g' flowers. If 10 flowers bloom and there are now 25 flowers in total, define 'g' and create an equation to find out how many flowers were there before they bloomed.

• 20

• 30

• 10

• 15

9. A pack of stickers costs 's' dollars. If you buy 6 packs for a total of 30 dollars, define 's' and write an equation to find the cost of one pack of stickers.

• s = 10

• s = 6

• s = 3

• s = 5

10. A school has 'h' students. If 15 new students enroll and the total number of students becomes 200, define 'h' and create an equation to find out how many students were there before the new enrollments.

• 185

• 190

• 200

• 175