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A can do a peice of work in 15 days and B in 20 days .If they together work on it for 4 days .then the fractions of work is left |
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Answer» A can do a work in 15 days and B in 20 days A can do the work in 15 days. Thus A finishes in ONE DAY = 1/15 work. B finishes in one day = 1/20 work Together, they finishes in one day 1/15 + 1/20 =7/60 work If they work together for 4 days then what is the fraction of work that is left? In 4 days they will finish work = 4 × 7/60 = 7/15 work Remaining work left = 1 - 7/15 = (15 - 7)/15 = 8/15 The fraction of work left is 8/15 Answer : The fraction of work left is 8/15
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