Question
If Ivan and Paul work together, they can complete a job in 12 days. If Ivan and Paul worked together for 6 days, followed by Paul who worked alone for the next 18 days, they can finish off the job.
  1. How many days would Paul need to complete the job alone? 
  2. How many days would Ivan need to complete the job alone?
4 m
(a)

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(b)

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If Ivan and Paul work together, they can complete a job in 12 days. If Ivan and Paul worked together for 6 days, followed by Paul who worked alone for the next 18 days, they can finish off the job.
  1. How many days would Paul need to complete the job alone? 
  2. How many days would Ivan need to complete the job alone?