A can do a work in 5days and b in 10 days.if they together work on it for 2days,then the fraction of the work that is left is
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A's 1day work is 1/5
B's 1day work is 1/10
A and B's 1day work is 1/5+1/10
2+1/10
3/10
For 2 days their work done is 2*3/10
6/10
3/5
The fraction of work left is 2/5
B's 1day work is 1/10
A and B's 1day work is 1/5+1/10
2+1/10
3/10
For 2 days their work done is 2*3/10
6/10
3/5
The fraction of work left is 2/5
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