Unit Rates
Steve drives 78 miles on 3 gallons of gas. Find the miles per gallon.
26 miles per gallon
Pam can run four laps around the track in 330 seconds. Patrick can run two laps around the track in 160 seconds. Which person runs the fastest per lap?
Patrick.
Determine the better buy.
18 ounces for $7.38
or
27 ounces for $15.39.
18 ounces for $7.38.
Do the following proportions form a proportion?
4:7 and 28:49
Yes
A grocery store sells 3 pounds of grapes for $3.45. Assuming the price per pound remains proportional, how much would 8 pounds cost?
$9.20.
Walmart buys a case of 24 Takis for $20. What is the unit rate?
$0.83 Takis per dollar.
Mrs. Carlson grades 50 papers in 12 minutes. Mrs. Hutchinson grades 120 papers in 30 minutes. Who grades more papers per minute?
Mrs. Carlson
Target and Walgreens are both having a sale on body spray. At Target you can buy 9 cans for $35.89 and at Walgreens you can buy 11 cans for $45.99. Which is the better buy?
Target.
Do the following form a proportion?
1.2: 4.6 and 6:22.2
No
A copier printed the first 120 pages of a report in 7 1/2 minutes. How many minutes should it take for the copier to print the remaining 32 pages. Assume the rate is constant.
2 minutes.
A skydiver falls 144 feet in three seconds. How far does the skydiver fall per second?
48 feet per second.
Suppose a helicopter travels 80 miles for 2 hours. A jet travels at 240 miles in 1 hours. Which travels faster?
Jet.
Sam noticed that Rocky River Coffee sells a 20 ounce coffee for $5.32 and a 16 ounce coffee for $4.98. Which cup of coffee is cheaper per ounce?
20 ounce.
Tina walks 1/2 mile in each 1/3 hour. What is Tina's walking rate?
3/2 miles per hour.
Amy jogs 1/3 of a mile in 1/15 of an hour, while John takes 1/30 of an hour to jog 1/5 of a mile. If they continued at this rate, who would jog farther in one hour and by how much?
John would jog 1 mile farther than Amy.
A pump moves 42 gallons in seven minutes. Find the unit rate.
6 gallons per minute.
Marcel drove 140 miles in 2 hours. Brandon drove 204 miles in 3 hours. Who drove at a faster rate (in miles per hour)?
Brandon.
Determine which is the better buy.
22 staplers for $330
or
4 staplers for $80.
22 staplers for $330.
A truck driver drove 120 miles in 1 3/4 hours. What is the speed of the truck in miles per hour?
68.57 miles per hour.
Jafar runs one lap around a track, representing 1/4 of a mile, in 1 2/3 minutes. How long, in minutes, will it take him to run one mile?
20/3.
Mrs. May read 124 pages in her book in 1/2 hour. What is the unit rate?
248 pages in 1 hour
It took a car 3 hours to drive 210 miles and another car 2.5 hours to drive 180 miles. Which car drove at a faster rate?
The second car.
Which is the better buy? 2 1/2 pounds of turkey for $6.25 or 3 1/3 pounds of turkey for $10.50?
2 1/2 pounds of turkey for $6.25.
It takes Caroline 1/5 of an hour to walk a mile. Four of Caroline's friends ?time themselves on their own walks of different lengths.
David: walked 1/2 of a mile in 2/5 of an hour
Jeanette: walked 1/2 of a mile in 1/10 of an hour
Kay: walked 1/5 of a mile in 1/2 of an hour
Mark: walked 1/3 of a mule in 3/5 of an hour
Which friend is walking at the same rate as Caroline?
Jeanette.
Jimmy and his family took a three-day trip. They drove 198 miles on the first day, 150 miles on the second day, and 210 miles on the third day. If the entire trip took 9 hours, what was the average driving speed?
62 miles per hour.