Download a can a work in 12 days. b can work in 20 days. a and b together work for 3 days after that a left

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a can a work in 12 days. b can work in 20 days. a and b together work for 3 days after that a left a can a work in 12 days. b can work in 20 days. a and b together work for 3 days after that a left a can a work in 12 days. b can work in 20 days. a and b together work for 3 days after that a left

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Download this and online watch a can a work in 12 days. b can work in 20 days. a and b together work for 3 days after that a left
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