Question 162215
5*.80+2.40x=1.40(5+x)
4+2.4x=7+1.4x
2.4x-1.4x=7-4
x=3 pounds of carmal is used.
Proof:
5*.80+2.40*3=1.40(5+3)
4+7.2=1.40*8
11.2=11.2