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a can do a piece of work in 5 days and b in 8 days. How long will they take to complete the work together

User Ashareef
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1 Answer

9 votes
9 votes

This is a ratio and proportion problem.

A’s portion of work completed in 6 days.

B’s portion of work completed in 8 days.

Together A+B=1/6+1/8 =7/24 Find Lowest Common Denominator

That means they finish 7/24 ratio of work a day, so now we have to find how long it will take them.

Take 1 day, and divide it by 7/24 ratio of work

1/7/24=24/7=3.43 days to finish.

User Hughgo
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