Every time you give show on a div , give hide all the others.
$("#add-festa-p").change(function() {
if ($(this).prop('checked')) {
$("#add-festa-p-div").show();
$("#add-festa-k-div").hide();
$("#add-festa-s-div").hide();
console.log("Mostra a DIV");
}
});
$("#add-festa-k").change(function() {
if ($(this).prop('checked')) {
$("#add-festa-k-div").show();
$("#add-festa-p-div").hide();
$("#add-festa-s-div").hide();
console.log("Mostra a DIV");
}
});
$("#add-festa-s").change(function() {
if ($(this).prop('checked')) {
$("#add-festa-s-div").show();
$("#add-festa-k-div").hide();
$("#add-festa-p-div").hide();
console.log("Mostra a DIV");
}
});