Let P(t)\displaystyle {P}{\left({t}\right)} be the performance level of someone learning a skill as a function of the training time t\displaystyle {t}. The derivative dPdt\displaystyle {\frac{{{d}{P}}}{{{\left.{d}{t}\right.}}}} represents the rate at which performance improves. If M\displaystyle {M} is the maximum level of performance of which the learner is capable, then a model for learning is given by the differential equation
dPdt=k(MP(t))\displaystyle {\frac{{{d}{P}}}{{{\left.{d}{t}\right.}}}}={k}{\left({M}-{P}{\left({t}\right)}\right)}
where k\displaystyle {k} is a positive constant.
Two new workers, John and Peter, were hired for an assembly line. John could process 11\displaystyle {11} units per minute after one hour and 15\displaystyle {15} units per minute after two hours. Peter could process 10\displaystyle {10} units per minute after one hour and 16\displaystyle {16} units per minute after two hours. Using the above model and assuming that P(0)=0\displaystyle {P}{\left({0}\right)}={0}, estimate the maximum number of units per minute that each worker is capable of processing.
John:   ,
Peter:   .