Challenge

challenge.js

let foo = { val: 10 };
let bar = { val: 20 };

function magic(a, b) {
  let first = a;
  let second = b;

  first.val = 30;
  second.val = 10;

  return (first.val + second.val);
}

let result = magic(foo, bar);
let total = (foo.val + bar.val);

console.log(result + total);