Question
If Vincent and Perry work together, they can complete a job in 12 days. If Vincent and Perry worked together for 9 days, followed by Perry who worked alone for the next 21 days, they can finish off the job.
  1. How many days would Perry need to complete the job alone? 
  2. How many days would Vincent need to complete the job alone?
4 m
(a)

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(b)

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If Vincent and Perry work together, they can complete a job in 12 days. If Vincent and Perry worked together for 9 days, followed by Perry who worked alone for the next 21 days, they can finish off the job.
  1. How many days would Perry need to complete the job alone? 
  2. How many days would Vincent need to complete the job alone?