A contract is to paint 3 houses. Mr brown takes 6 days to
paint a house. Mr black takes 8 days and Mr blue 12 days. Mr
brown leaves for a vacation after 8 days. Mr black works for
6 days from then.How many days would Mr blue require to
complete the contract?
Answers were Sorted based on User's Feedback
Answer / m.vinod
11 days
brown completes 1+1/3 house in 8 days
black completes 3/4 house in 6 days
let the work done by blue=x
then
1+1/3+3/4+x=3 total houses to paint
x=11/12
so blue will complete the remaining work in 11 days
Is This Answer Correct ? | 9 Yes | 0 No |
Answer / scrappy-coco
a tiny bit of modification in the first answer.
Mr. Brown completes 4/3 rd of a house
Mr. Black completes 3/4 th of a house
Mr. Blue completes x/12 th of a house
It is evident that 4/3+3/4+x/12=3
i.e. (x+25)/12=3
i.e. x=11
So Mr. Blue takes 11 days
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / raj
I think it is 12.
Mr brown completes 1 house + 1/4 th a house in 8 days.
Mr black completes 3/4 th a house in 6 days. 1/4 +3/4 = 1
thus one more house left to be painted. Mr blue takes 12
days to paint 1 house( given in the question ).
Is This Answer Correct ? | 0 Yes | 3 No |
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