get_budgets([
  { "name": "John", "age": 21, "budget": 23000 },
  { "name": "Steve",  "age": 32, "budget": 40000 },
  { "name": "Martin",  "age": 16, "budget": 2700 }
]) ➞ 65700

get_budgets([
  { "name": "John",  "age": 21, "budget": 29000 },
  { "name": "Steve",  "age": 32, "budget": 32000 },
  { "name": "Martin",  "age": 16, "budget": 1600 }
]) ➞ 62600