A, B and C can complete a work in 10, 15 and 20 days respectively. A and B start it together. B is replaced by C after 2 days. A leave it after one more day. In how many days work was completed?5
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Q: A, B and C can complete a work in 10, 15 and 20 days respectively. A and B start it together. B is replaced by C after 2 days. A leave it after one more day. In how many days work was completed?
- 113false
- 2\(13 {1 \over 13 }\)true
- 3\(18 {4 \over 3 }\)false
- 418false
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