T Tina Guest Mar 24, 2009 #1 Alice can paint a room in 6 hours. Her assistant can paint the same room in 8 hours. How long will it take if the two of them work together? Correct Answer=10 points
Alice can paint a room in 6 hours. Her assistant can paint the same room in 8 hours. How long will it take if the two of them work together? Correct Answer=10 points
J Jun Agruda Guest Mar 24, 2009 #2 Hours to paint together the room (x): x/6 + x/8 = 1 4x + 3x = 24 7x = 24 x = 24/7 or 3 3/7 Answer: 3 3/7 hrs OR 3 hrs, 25 min & 42 6/7 seconds
Hours to paint together the room (x): x/6 + x/8 = 1 4x + 3x = 24 7x = 24 x = 24/7 or 3 3/7 Answer: 3 3/7 hrs OR 3 hrs, 25 min & 42 6/7 seconds
I Inquiry Complex Guest Mar 24, 2009 #3 In one hour, Alice can paint 1/6 of a room while the assistant can paint 1/8 of a room. 1/6 + 1/8=7/24 If they work together, they will take 1x24/7 hours = 24/7 hours = 3.43
In one hour, Alice can paint 1/6 of a room while the assistant can paint 1/8 of a room. 1/6 + 1/8=7/24 If they work together, they will take 1x24/7 hours = 24/7 hours = 3.43
