Solving Proportions with Variables

Write and solve a proportion for this scenario. If Sarah can swim 8 laps in 5 mins, how many laps can she swim in 25 mins (assuming a constant speed)?

• 40 laps

• 15.6 laps

• 32 laps

• 21.9 laps

Solve the proportion:

• 4

• 8

• 14

• 10

• 5

• 2

• 6

• 10

• 12

• 8

Solve for k

• 165

• 17

• 1/17

• 1/165

Solve the proportion

• -3

• -6

• 6

Write and solve a proportion for this scenario. If Shane can bake 120 dozen cookies in five days, how many days would it take to bake 800 dozen cookies?

• about 34 days

• about 30 days

• about 12 days

• about 7 days

Solve for w

• 10/3

• 50/9

• 46/9

• 22/3

Solve for a

• 29/12

• 41/12

• 107/12

• 13

TYPE IN THE EQUATION THAT YOU GET WHEN YOU CROSS MULTIPLY.

For example if the proportion was 2/3 = x/10, I would enter: 3x=20.

DO NOT TYPE IN THE FINAL ANSWER, JUST THE EQUATION.

Mathematical Equivalence

ON