SOLUTION: a and b do a piece of work in 14 days which b can do in 21 days.they begin together and work at it for 7 days then a fell ill and b had to complete the work in how many days the wo

SOLUTION: a and b do a piece of work in 14 days which b can do in 21 days.they begin together and work at it for 7 days then a fell ill and b had to complete the work in how many days the wo

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Question 810889: a and b do a piece of work in 14 days which b can do in 21 days.they begin together and work at it for 7 days then a fell ill and b had to complete the work in how many days the work was complete
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
14/21+14/a=
a = 42
A can do the whole job in 42 days
in 7 days they did half the job
it takes a 21 more days to finish half the job alone

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