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OpenStudy (anonymous):
If Jim Roller can paint a room in 3 hours while John Brush would take 5 hours, how long will they take if they work together? i got 1/8 hour?
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OpenStudy (anonymous):
1/3 + 1/5 = 1/x
OpenStudy (anonymous):
x = 15/8 hours
OpenStudy (saifoo.khan):
\[\Huge 1\frac{7}{8} hours.\]
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