Jennifer Soule 12 cherry pies and three apple pies for a total of $144. Jakob sold two cherry pies and nine apple pies for a total of $126.

Answer 1

12c + 3a = 144 ---> 4c + a = 48 ---> a = 48 - 4c

2c + 9a = 126

substitutes into 2nd equation:

2c + 9(48-4c) = 126

2c + 432 - 36c = 126

-34c = -306

c = -306/-34

c = 9

then a = 48 - 4(9) = 48 - 36 = 12

apple pie costs $12 and the cherry pie costs $9