Question 117956
Susan and Joan are diving for golf balls in a large water trap. susan recovers a ball every 0.016 hour while joan recovers a ball every 0.025 hour. If both are working, then at what rate (in golf ball er hour) are they recovering golf balls. 
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Susan DATA:
Rate = 0.016 ball/hr. 
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Joan DATA;
Rate = 0.025 ball/hr
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Together rate = 0.016 + 0.025 = 0.0410 ball per hour
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Cheers,
Stan H.