2. Transistors are of three types, type P, type Q, and type R. A grade A box of transistors contains 5 P's, 3Q's, and 1 R. A grade B box contains 2 P's, 3 Q's and 4 R’s. How many boxes
of each grade can be filled if the total numbers of P, Q, and R available are 80, 75, 70
respectively, and all transistors are used?
2) Grade A = 10 and Grade B= 15