a can do a piece of work in 60 days he worked for 15 days and then be done finish the remaining work in 30 days did tour together can finish the work in how many days
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A can do (1/60)th of the work in a day. So in 15 days, A does 15*1/60 = 1/4th of the work.
The remaining 3/4th of the work is done by B in 30 days. So the entire work would be done by B in 30*4/3 = 40 days.
So if A and B together do the work they will do (1/60)+(1/40) = (2+120)+(3/120) = 5/120 or 1/24th of the work in a day.
So A and B together will do the same work in 24 days.
Step-by-step explanation:
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