John's grill messes up and burns half his steak. He eats 80% of what isn't burned. If the steak was originally 30 ounces how much steak did he eat?
Step-by-step reasoning process below:
12
There were 30 *.

5 = 15 ounces of unburnt steak.

So he ate 15 *.

8 = 12 ounces of steak.

.

The answer: 12