Ratios Day 2 Presentation Problems 1. The ratio of cats to dogs at Four-Legged Friends Pet Store is 8:7. If Four-Legged Friends has 48 cats, how many dogs does it have? Cats 6 6 6 6 6 6 6 Dogs 6 6 6 6 6 6 6 6 = 48 = ? (42) 8 units = 48 48 ÷ 8 = 6 1 unit = 6 7 units of 6 7 • 6 = 42 Four-Legged Friends has 42 dogs. Milk It! How many animals are there altogether? 2. The ratio of sunny days to cloudy days in Lawsville, Colorado is 9:2. In a given time period, if there are 108 sunny days, how many cloudy days would you expect? Sunny Days Cloudy Days 12 12 12 12 12 12 12 12 12 12 12 = 108 9 units = 108 108 ÷ 9 = 12 1 unit = 12 = ? (24) 2 units of 12 Lawsville would have 24 cloudy days. 2 • 12 = 24 Milk It! What percent of the days are sunny? 3. Phineas has both country music and rock music on his iPod. The ratio of country music to rock music is 5:4. If Phineas has 205 country songs on his iPod, how many rock songs are on his iPod? Country Songs 41 41 41 41 Rock Songs 41 41 41 41 41 = 205 = ? (164) 5 units = 205 205 ÷ 5 = 41 1 unit = 41 4 units of 41 Phineas has 164 rock songs on his iPod. Milk It! What percent of his songs are rock? 4 • 41 = 164 Ratios Day 2 Assessment Problems 1. The ratio of a rectangle’s length to its width is 4:3. If the length of the rectangle is 44 inches, what is the rectangle’s width? Length 11 11 11 Width 11 11 11 11 = 44 = ? (33) 4 units = 44 44 ÷ 4 = 11 1 unit = 11 3 units of 11 The rectangle’s width is 33 inches. 3 • 11 = 33 2. At the Fruit Stand, the ratio of red apples to green apples is 2:3. If the Fruit Stand has 57 green apples, how many red apples does it have? Red apples 19 19 Green apples 19 19 = ? (38) 19 = 57 3 units = 57 57 ÷ 3 = 19 1 unit = 19 2 units of 19 2 • 19 = 38 The Fruit Stand has 38 red apples.