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91.John drives at an average speed of 80 km/h and travels the distance from home to work in 30 minutes. What must his average speed be if John wants to travel the same distance in 20 minutes?
92.Ava made juice out of oranges, apples, and pears. Oranges and apples are in the ratio 2:3, and apples and pears are in the ratio 2:5. What is the ratio of oranges to apples to pears in her juice?
93.Kim is on her way to Melissa’s house, traveling 59 miles per hour. Kim lives 29 miles from Melissa’s house. Estimate the amount of time it will take Kim to arrive at Melissa’s house.