Two chemicals, A and B are combined forming chemical C. The rate of the reaction is mutually proportional to the amounts of A and B not yet converted to C. Primarily there are 200 grams of A and 300 grams of B and during the reaction, for each gram of A used up in the conversion there are three grams of B used up. An experiment illustrate that 75 grams of C are produced in the first ten minutes. After a long period of time how much of A and of B remains as well as how much of C has been produced?