We know, 1 ounce = 29.57 ml
so, 64 ounces = 1892.71 ml
so, remaining drink would be: 1892.71-700 = 1192.71 ml
$1.08
you would multiply your cost (1.00) by 8% which is equivalent to .08 and then add to to the original cost. or to skip the middle step just multiply it by 1.08 since you are adding the 8% to 100% of the original cost
A is the right answer my bad :(