Ratio
A ratio is _________
a comparison of two quantities
Is 4:6 an equivalent ratio to 8:12?
yes
Jake adds 12 ounces of sugar to 4 cups of lemonade. Maya adds 10 ounces of sugar to 5 cups of lemonade. Will Maya's lemonade be sweeter than Jake's lemonade?
No, Jake will be sweeter than Maya
Jen buys 4 tires for $272. Each tire was the same price.
What is the cost of 1 tire?
$68
Heather is a cashier. She can ring up 12 customers in 9 minutes.
At this rate, how many minutes does it take her to ring up 4 customers?
3 minutes
What are the ways to write a Ratio?
x:y, x to y, x/y (fractions)
Gary needs 24 screws for every 2 chairs he builds.
How many screws will he need for 6 chairs?
How many screws will he need for 9 chairs?
72 and 108
Devon and Kylie each make a cheese sauce. Devon uses 8 oz of cheese for every 9 oz of cream, and Kylie uses 11 oz of cheese for every 12 oz of cream. Which cheese sauce will have a stronger cheese flavor?
Kylie's cheese sauce has a stronger cheese flavor.
Ruben bought 6 comic books for $21. Each comic book was the same price.
What was the cost for 1 comic book?
$3.50
Lynnette can wash 95 cars in 5 days.
How many cars can Lynnette wash in 11 days?
209 cars
Quinn has a large family. She has 4 cousins who live in Texas, 3 cousins who live in Nebraska, and the other 9 cousins who live in Michigan.
What is the ratio of Quinn's cousins who live in Texas to her total number of cousins?
4 to 16
Meryl uses 10.5 hectares of land for every 5 cabins she builds.
How many hectares of land will she need for 1 cabin?
How many hectares of land will she need for 7 cabins?
2.1 and 14.7
Tina's candles use 15 drops of lavender oil for every 3 cups of candle wax. Sara wants her candles to have 15 drops of lavender scent for every 5 cups of candle wax. Will Sara's candles have a stronger lavender scent than Tina's candles?
No
The following shows the speeds at which Jeff does 4 activities.
Biking has a rate of 19 miles in 2 hours.
Walking has a rate of 14 miles in 4 hours.
Running has a rate of 15 miles in 3 hours.
Swimming has a rate of 18 miles in 4 hours.
Which type of activity does Jeff do at a speed of 4.5 miles per hour?
Swimming
Bill can hit a bucket of 323 golf balls in 17 hours.
How many golf balls can Bill hit in 23 hours?
437 Golf Balls
Jun-seo notices that there are 13 right-handed players on his baseball team and 2 left-handed players.
What is the ratio of left-handed players to right-handed players?
2 to 13
Cole skates 15 yds every 5 s. Based on this ratio, how many seconds does it take him to travel 270 yds?
90 seconds
Lily makes a fruit punch using 48 ounces of orange juice for every 6 cups of water. Noah uses 70 ounces of orange juice for every 9 cups of water. Which fruit punch has a higher concentration of orange juice?
Lily has a higher concentration of orange juice
The following table shows how many pies 4 baking teams made at a pie-baking competition.
Team Crusty baked 28 pies in 8 hours.
Team Pie Peace baked 27 pies in 6 hours.
Team Fab Bakers baked 20 pies in 4 hours.
Team Crusty baked 26 pies in 5 hours.
Which team made pies at a rate of 4.5 per hour?
Pie Peace
Henry can write 5 pages of his novel in 3 hours.
At this rate, how many pages can Henry write in 8 hours?
*as a fraction
13 1/3
Dean loves rocks. They have 6 pieces of granite, 5 pieces of obsidian, 3 pieces of marble, 3 pieces of amethyst, 1 piece of sunstone, and 14 pieces of sandstone.
What is the ratio of pieces of sandstone to not pieces of sandstone in Dean's collection?
14 to 18
When Alex walks her dog, she travels 1,000 ft every 4 minutes. Today, she walked her dog for more than 4 minutes. Describe the number of feet Alex traveled.
more than 1,000 ft
Ethan bakes cookies using 32 ounces of chocolate chips for every 5 cups of flour. Sophia bakes cookies using 24 ounces of chocolate chips for every 3 cups of flour. Which batch has more chocolate chips per cup of flour, and by how much?
Sophia has more chocolate chips by about 1.6 oz
If a car travels 375 miles on 15 gallons of gas, what is the car’s fuel efficiency in miles per gallon?
25 miles per gallon
At the store Brand A potato chips were $71.28 for 6 bags. Brand B potato chips were $59.15 for 5 bags. Which brand has the cheaper price?
Brand B