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A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it? |
8 hours 10 hours 12 hours 24 hours |
12 hours |
Using LCM method:
Efficiency of A = 3, B+C = 4, A+C = 6 B=? A+C = 6, A = 3, C = 3 B+C = 4, C = 3, B = 1 B alone will do it in = \(\frac{12}{1}\) = 12 hours |
