Manipulate the first equation to
y = 22-7z
Then substitute in the second to find z
8(22-7z) + 7z = 127
176-56z+7z = 127
-49z = -49
z = 1
So y = 22-7(1) = 22-7 = 15
y = 15; z = 1
Answer: 3/16
3/4 divide 4 is:
3/4 times 1/4=
3/16
Divide 93.65 by the 5 gallons.
93.65/5= 18.73
If me.king bought the larger container, the unit price would be $18.73 per gallon.
21.99-18.73= 3.26
The savings is $3.26 per gallon.
I hope this helps!
~kaikers
