A can do a piece of work in 10 days and B can do it in 15 days. If both of them are working together, half of the work can be finished in?
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In 10 days A does a whole work
In 1 day A does 1/10th work
In 15 days B does a whole work
In 1 day B does 1/15th work
Total work = 1/10 + 1/15 = 5/30 = 1/6
Total work they do in 6 days
Half = 1/2
1/2 of the work in = 1/2*6= 3
Therefore half work can be done in 3 days
Hope this helps you :)
Have a gr8 day!!
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