9. A manufacturer of baby dolls makes two types of dolls. One is sold under the brand name Molina and the other Suzie. Processing of these two dolls is done on two machines A and B. The processing time for each Molina is 3 hours and 4 hours on machines A and B respectively, and that for each Suzie is 1 hour and 4 hours on machines A and B respectively. There is 50 hours of time per week available on machine A and 90 hours on machine B. The profit contribution for a Molina is Rs 6 and that for Suzie is Rs 18. Formulate and solve this problem to determine the optimal weekly production schedule of the two dolls. (Provide an all-integer solution.)