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

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

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