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Questions (2)
How many different ways can a team of 2 men and 2 women be formed if there are 4 men and 5 women from which to select?
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Jan and Pete are home decorators. Jan can paint 3 rooms in 2 hours. Pete can paint 2 rooms in 3 hours. If they work together,
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Answers (1)
Jan's rate = 3/2 rooms/hr Pete's rate = 2/3 rooms/hr combined rate = 3/2 + 2/3 rooms/hr = 16/6 rooms/hr time to do 1 room at combined rate = 1/(16/6) hrs = 6/16 or 3/8 hrs so to do 6 rooms would take 6(3/8) hours so = 9/4 hrs or 2 hours and 15 minutes
