Javascript function - help

Question

someone helps me in this activity, I do not understand and does not get in the head, I have not seen a good explanation.

Now we ask you to declare a function called tripleDaSoma() that takes two parameters. Then you have to add both and return three times the result value of the sum of the two parameters. To do this, you already count (even if you don’t see it declared) with the triple function, which takes a parameter and returns its value multiplied by three.

I tried to do so.

function triploDaSoma(num1, num2){
        function triplo(num1, num2){
            var resultado1 = somar(3, 2) * 3;
        return resultado1;
        }
        var resultado = somar(4, 5) * 3;
        return resultado;
}

but there’s a mistake saying it’s missing: Mistakes:

You must use the triple() function within tripleDaSoma The execution of the triple functionDaSoma(3,2) must return the value 15 triple functionDaSoma(4,5) must return the value 27

Honestly if I don’t learn Function I give up javascript.

Answer 1

From what I understand of the statement, it is not for you to create the function triplo, is for you to consider that it already exists and use it.

Assuming this is the triple function:

function triplo(valor) {
    return valor * 3;
}

Your job would be to invoke it within the function triploDaSoma:

function triploDaSoma(a, b) {
    var soma = a + b;
    var resultado = triplo(soma);
    return resultado;
}