the work ? 4. A and B, working together can finish a piece of work in 6 days, while A al 9 days. How much time will B alone take to finish it? many days will they finish it together and separately? A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. In how 6. A and B can do a piece of work in 10 and C in 36 days. In how many days will they finish it together and separately
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Step-by-step explanation:
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Step-by-step explanation:
Both work together =1/6
A work =1/9
work done by B = 1/6-1/9 = 1/18
Total time took =1÷1/18 = 18
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