Question 972006
A+B=157
5.6*A+ 4.25 *B=780.65

A=(157-B)

-5.6B + 879.2 +4.25 B =780.65

-1.35B =-98.55
B= 73 lbs..  ANSWER  cost 310.25
A=84       ;;;;        cost 470.40  Total 780.65 check