Understanding Ratios and Proportions

1 10 = 60 6 36

16 4 = 24 2 6

13 39 3 = 26 78

Match the following programming languages with their primary usage:

4 11=132 5 60

5 18 = 27 28 42

6 15 6 = 19 57

7 27 = 58 52 104

Paul is making a plaster misture for his sculpture class. If he mixes 5 ounces of plaster with 4 ounces of water, what is the ratio of plaster to water?

Erika's mom separates the laundry into sets. If she puts two sheets and three pillowcases into each set, what is the ratio of pillowcases to sheets?

Floyd is setting tables for a sports banquet. For each place setting, he puts two forks to the left of the plate and a knife and a spoon to the right of the plate. What is the ratio of forks to knives?

Jean is making pizza. She adds 4 slices of pepperoni and 3 olives to each slice of pizza. What is the ratio of pepperoni to olives?

What is the ratio of olives to pepperoni?

4 1 =36 9 5 35 2 = 7 81

7 4 = 12 16 3 = 9 3 12

5 125 = 300 12 5

6 = 36 5 32

7 = 84 8 32 11 = 132 5 25

18 = 18 4 8

Solve for the unknown varible. 10 = 36 6 9

Solve for the unknown varible. 4 = 24 13 X

Solve for the unknown varible. 11 = 132 18

Solve for the unknown varible. 18 =42 28

Solve for the unknown varible. X 15 = 57 19

Solve for the unknown variable. 15 = 58 52 104

George likes to sweeten his ice tea. When he is drinking a 20 ounce ice tea, he adds two teaspoons of sugar. If he makes a gallon if ice tea, how many teaspoons if sugar should he add (there are 128 ounces in a gallon)?

Peter wants to make scrambled eggs for the customers at the diner. His recipe calls for 12 eggs and is enough for 5 peole. How many eggs will he need if he has to feed 75 customers?

A person needs to drink 3 quarts of water for evey hour of running time. If a runner plans to complete a marathon in 5 hours, how many quarts of water should she drink during the race?

Diane's car uses 5 gallons of gasoline to travel 125 miles. How far will Diane be able to travel on 20 gallons of gasoline?

When Frank goes on a 4-day vacation with his family, he packs 4 t-shirts and 3 pairs of shorts. If he is going on an extended vacation for 12 days, how many t-shirts and shorts will he need to pack?

There were 90 customers at the restaurant on Friday, 60 of whom ordered the vegetarian meal. If there are 195 customers on Sunday, how many vegetarian meals would you expect to sell?

40% of 50 is

72 is 18% of

14 is ___% of 35

When calculating percent change, you are determining the percentage change from a starting point. If you want to determine the percent your height has changed, say from 65 inches to 70 inches, you want to know how much it has changed relative to your starting height of 65 inches. Simple subtraction tells us your height has changed 5 inches, but to calculate the percent change, you must set up an equation:

Starting height = 65 inches Change in height = (70 in. - 65 in.) = 5 inches __= __ Step 1: Set up your equation: