Question
If George and David work together, they can complete a job in 12 days. If George and David worked together for 8 days, followed by David who worked alone for the next 20 days, they can finish off the job.
  1. How many days would David need to complete the job alone? 
  2. How many days would George need to complete the job alone?
4 m
(a)

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(b)

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If George and David work together, they can complete a job in 12 days. If George and David worked together for 8 days, followed by David who worked alone for the next 20 days, they can finish off the job.
  1. How many days would David need to complete the job alone? 
  2. How many days would George need to complete the job alone?