6. One week, Kristi worked 3 days at a department store for 3 1/2 h each day. She was paid $9/h.

a) How many hours did Kristi work that week?

b) How much did Kristi earn that week?

7. Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in one Earth week?

8. A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

9. The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

10. It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

11. Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?

12. The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in order to process 3 groups of 4 candidates each?

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