###Human: John injures his shoulder while lifting weights.  After the injury, his bench press goes down 80%.  After a bit of training, he manages to triple the weight he can bench.  If he started with a 500-pound bench press, what is it now?, ### Assistant: He lost 500*.8=400 pounds from his bench
So his bench went to 500-400=100 pounds
After training it increased to 100*3=300 pounds 
 So the answer is :  300