A and B can paint a wall in 4 days. If A alone con
paint the wall in 6 days, in how many days
B.canpaint it alone
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Answer:
A can paint a wall in 6 days
Total days taken by both to complete the wall=4 days.
Work done by both in one day =1/4
Work done by A in one day=1/6
Work done by B in one day =1/4-1/6
3/12-2/12=1/12
Work done in a day by B =1/12
Therefore total days taken to complete the wall are
1÷1/12
1×12/1=12days
Total time taken by B is 12 days.
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