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?
There were 30*.5=<<30*.5=15>>15 ounces of unburnt steak
So he ate 15*.8=<<15*.8=12>>12 ounces of steak
#### 12
John'un ızgarası bozulur ve bifteğinin yarısı yanar.  Yanmayan kısmın %80'ini yiyor.  Eğer biftek aslında 30 ons ise ne kadar biftek yemiştir?
30*.5=<<30*.5=15>>15 ons yanmamış biftek vardı
Yani 15*.8=<<15*.8=12>>12 ons biftek yedi.
#### 12