If it takes an hour to fill 1 tank in 1 hour 1 tank will be full
Answer is 36.
20 * 80/100 = 16
20+16=36
No he would get back $4.56. Start with $20 -13.59-1.85=4.56
Answer:

Step-by-step explanation:
Answer:
Brand 1
Step-by-step explanation:
4 Oz of coffee is 1.15
8 Oz of coffee is another 1.15 added, because it is another 4 Oz of coffee
12 Oz is another 1.15 added, it's another 4 Oz of coffee
And so on.