Question 379032
Sally can paint a room in 3 hours while it takes Steve 8 hours to paint the same room. How long would it take them to paint the room if they worked together? 
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Sally rate = 1/3 job/hr
Steve rate = 1/8 job/hr
Together rate = 1/x job/hr
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Equation:
rate + rate = together rate
1/3 + 1/8 = 1/x
8x + 3x = 24
11x = 24
x = 24/11 = 2 2/11 hrs
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together time = 2 hr + (2/11)*60 min = 2 hr 10.9 min
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Cheers,
Stan H.
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