Answer:
x = 1/3
Step-by-step explanation:
15 = 1/2 + 3/2x + 10
15 - 1/2 -10 = 3/2x
9/2 = 3/2x
9 x 2x = 3 x 2
18x = 6
x = 6/18
x = 1/3
You just add all of the weight of the contents together. 12 3/4+ 8 1/4 +7, which equals 28 pounds.
7.84/7 = $1.12
5.70/5 = $1.14
1.14 - 1.12 = .2
2 cents cheaper
Answer -3.5 reason is because if u do 7 multiplied by 1/2 u get that answer