232
A=2(WL+HL+HW)
so 2(8*10+2*10+2*8)
18 + 0.14m = 8 + 0.19m
18 - 8 = 0.19m - 0.14m
10 = 0.05m
10 / 0.05 = m
200 = m <== they will cost the same at 200 minutes
2% , 5% , 10% are the errors in that
Let h be the price of a hamburger, d be the price of a hot dog and c be the price of a cheeseburger
3+d=h —(1)
c-20=h —(2)
3h=2d+2c-75 —(3)
Sub (1), (2) into (3)
3h=2(h-3) + 2(h+20) -75
3h =2h-6+2h+40-75
3h=4h-41
h=41
Therefore, the price of a hamburger is $41
The possible answer for y is 72 hope this helps
