A alone can do a work in 15 days and B alone can do it in 10 days.if they both work together so how many days will they take to finish the work ?
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A=15 days
B=10 days
So,total days to finish work (together)=A+B
=15+10=25
B=10 days
So,total days to finish work (together)=A+B
=15+10=25
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