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R started the work and left after some days, when 25% work was done. After it Z joined and completed it working for 25 days. In how many days R and Z can do the complete work, working together?
5Study the following graph carefully to answer the given questions
Q:
R started the work and left after some days, when 25% work was done. After it Z joined and completed it working for 25 days. In how many days R and Z can do the complete work, working together?
- 16false
- 28false
- 310false
- 412false
- 520true
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