Leo can paint a room in 4 1/2 hours. His brother James can do the same job in 7 1/2 hours. How long will it take them to paint the room together? * 2 hours
2 and 3/4 hours
2 and 15/16 hours
2 and 13/16 hours
2 and 3/4 hours
2 and 15/16 hours
2 and 13/16 hours
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Answer:
2 13/16 hours
Step-by-step explanation:
1/9/2 + 1/15/2 = 1/x
2/9 + 2/15 = 1/x
10+6/45 =1/x
16/45=1/x
16x=45
x=45/16