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You are on a plane ride northbound into the wind and it take 4 hours to fly to its destination. The flight home,
with the wind takes 3 hours and 18 min. The wind speed is 40mph. What is the speed of the plane (without any
wind)?
Round to the nearest hundredth
33 mph
You are on a boat that goes 91 miles downstream in 7 hours but
requires 12 hours to go 84 miles upstream.
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What is the speed of the boat in still
water?
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Suppose 38 lbs of coffee beans are required to produce 2 lbs of farmer's coffee. how many lbs of coffee beans are required to produce 309 lbs of farmer's coffee?