human
John goes to the market with €100. He buys a roast for €17 and vegetables for €11. How much money does he have left?
assistant
How much did John spend? ** He spent 17 + 11 = €<<17+11=28>>28.
How much money does John have left? ** So, he still has 100 – 28 = €<<100-28=72>>72 remaining.
#### 72