P Q R can complete a work in 18 days . they work together for 2 days and then P leave. if their rate of work is equal in how many days will remaining work will be completed ?

• rate is same so individually work per day is = 1/54 .
  
  2 days work for all = 2/18 = 1/9 rest work = 1- 1/9 = 8/9
  
  q and r one day work = 1/54 + 1/54 = 2/54 = 1/27
  
  they both can do the resr work in == (8/9) / (1/27) = 24
  
  total days = 24 + 2(every one worked for ) = 26 days .
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