promPonde.js

const notes = [
  {
    course: "Educación Física",
    note: 10,
    credit: 2,
  },
  {
    course: "Programación",
    note: 8,
    credit: 5,
  },
  {
    course: "Finanzas personales",
    note: 7,
    credit: 5,
  },
];

const notesWithCredit = notes.map(function (noteObject) {
  return noteObject.note * noteObject.credit;
});
console.log(notesWithCredit);

const sumOfNotesWithCredit = notesWithCredit.reduce(function (sum = 0, newVal) {
  return sum + newVal;
});
console.log(sumOfNotesWithCredit);

const credits = notes.map(function (noteObject) {
  return noteObject.credit;
});
console.log(credits);

const sumOfCredits = credits.reduce(function (sum = 0, newVal) {
  return sum + newVal;
});
console.log(sumOfCredits);

const promedioPonderadoNotasConCreditos = sumOfNotesWithCredit / sumOfCredits;
console.log(promedioPonderadoNotasConCreditos);