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A and B can paint a wall in 3 days. A can do it alone in 5 days. how many days would it take for B alone?
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The rate of A+B is of the job-per-day.
The rate of A is of the job-per-day.
Hence, the rate of B is = = of the job-per-day.
Answer. It will take = for B to complete the job working alone.
You can find many other similar solved joint-work problems in the lessons
- Using Fractions to solve word problems on joint work,
- Solving more complicated word problems on joint work,
- Selected joint-work word problems from the archive
in this site.
Read them, and you will learn how to solve such problems once and for all.
Read them to get trained in solving joint-work problems.