unit rate

Luke and 5 friends packed enough food for a 2-week canoe trip. If one extra person decided to go on the trip at the last minute, how long will the food last? Luke and 5 friends = 6 people. 2 weeks = 14 days, so the food lasts 6 people * 14 days = 84 days One extra person on the trip means 6...

When Mike uses a riding mower, it takes him 3 hours to mow his lawn. When he uses a push mower, it takes him 6 hours to mow the lawn. (His sister also can mow the lawn with the push mower in 6 hours.). Mike wanted to get the lawn mowed as quickly as possible, so he paid his sister $10 to mow...

It takes Deanna 7 hours to paint a fence. Who fraction of the fence does she paint in one hour? 7 hours for 1 fence = 1/7 of the fence per hour

If it takes 7 people 3 hours to dig a 50 cubic foot hole, how long will it take two people to dig the hole? 7 people * 3 hours = 21 hours per person 21 hours per person / 2 people = 10.5 hours

If it takes 3 people 4 hours to clean a warehouse, how long will it take 4 people to clean the warehouse? 3 people * 4 hours = 12 hours per person 12 hours per person / 4 people = 3 hours

After an explosion of an oxygen tank, three astronauts were forced to move into the lunar lander that was attached to their spacecraft. If the lunar lander had enough oxygen to last 2 people for 6 days, is there enough oxygen for 3 astronauts if their journey back to earth will take 4 days? 2...

One bag of cat food will feed 3 cats for 40 days. If I buy 2 more cats, how long will on bag of cat food last? If 1 bag of cat food feeds 3 cats for 40 days, then 1 bag of cat food will feed 1 cat for 3 * 40 days = 120 days. Therefore, if I buy 2 more cats, I have 3 + 2 = 5 cats. 120 days / 5...

Dan and four friends planned a 32-day hike to the summit of Mt. Everest. After they bought enough food to last the five people 32 days, three other friends decided that they also wanted to go along on the adventure. How long will the food last now that eight people are taking the trip? If the...

Lauren wrote a total of 6 pages over 2 hours. How many hours will Lauren have to spend writing this week in order to have written a total of 9 pages? Solve using unit rates. 6 pages per 2 hours equals 6/2 = 3 pages per hour as a unit rate Set up equation using h hours: 3h = 9 Divide each side...