A can do a work in 45 days. He works at it for 15 days and then, B alone finishes the
remaining
work in 24 days. Find the time taken to complete 80% of the work if they work
together.
A is thrice as fast as B. IfB can do a piece of work in 24 days then find the number of days
they will take to complete the work together.
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good night
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