Question
If Dylan and Lee work together, they can complete a job in 12 days. If Dylan and Lee worked together for 9 days, followed by Lee who worked alone for the next 15 days, they can finish off the job.
  1. How many days would Lee need to complete the job alone? 
  2. How many days would Dylan need to complete the job alone?
4 m
(a)

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(b)

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If Dylan and Lee work together, they can complete a job in 12 days. If Dylan and Lee worked together for 9 days, followed by Lee who worked alone for the next 15 days, they can finish off the job.
  1. How many days would Lee need to complete the job alone? 
  2. How many days would Dylan need to complete the job alone?