SOLUTION: Person A can do a piece of work in 10 days. After he has worked for 2 days, B comes and joins him and together they finish the work in 3 more days. In how many days could B have do

Question 289005: Person A can do a piece of work in 10 days. After he has worked for 2 days, B comes and joins him and together they finish the work in 3 more days. In how many days could B have done the work by himself?
(a) 6 (b) 7 (c) 8 (d) 9 (e) None of the above

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
person A works for 5 days and does half (5/10) the job

person B does the other half in 3 days, so he could do the whole job in 6 days [3/(1/2)]
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