[2\dfrac{2}{7} days] A can do a work in 12 days, B in 6 days and Cin 3 days. A and B start working together andafter

For Competitive Exams

A can do a work in 12 days, B in 6 days and Cin 3 days. A and B start working together and
after a day, C joins them. The total number of days required to complete the work is
days

2$\dfrac{2}{7}$ days

1$\dfrac{2}{7}$ days

2$\dfrac{1}{7}$ days

1$\dfrac{1}{7}$ days

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