Asked by Mo
Abbie paints twice as fast as Beth and three times as fast as Cathie. If it takes 60 min to paint a living room with all three working togather, how long does it take for Abbie if she works alone?
Answers
Answered by
Steve
In terms of minutes taken.
b = 2a
c = 3a
1/a + 1/2a + 1/3a = 1/60
a = 110
b = 2a
c = 3a
1/a + 1/2a + 1/3a = 1/60
a = 110
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