"Quel âge as-tu?" means "What is your age?", so naturally you would respond with your age, which is expressed using the form: "J'ai [Number] ans."For example, if I was 25 years old, I would say "J'ai 25 ans." or "J'ai vingt-cinq ans."
il a quel âge means "how old is he?" in English.
Comment ca va? = How are you?Quel est votre âge? = What is your age?
Quel âge ("âge" is a masculine noun, "quel" is the masculine pronoun)
"How old is your brother?" is an English equivalent of the French phrase Quel âge a ton frère? The pronunciation of the interrogative in the second person informal singular -- which translates literally as "What age does your brother have?" -- will be "keh-lazh a toh frer" in French.
"What secondary school do you go to?" is a literal English equivalent of the French phrase À quel collège vas-tu? The pronunciation of the interrogative in the second person informal singular -- which translates also as "Which high school (college) do you go to?' -- will be "a kel ko-lezh va-tyoo" in French.
quel âge as-tu / avez-vous ? quel est ton âge ?
"quel âge as-tu ?"
quel âge as-tu ?
quel âge as-tu ?
quel âge a Sarah ?
quel âge a une personne ?
Quel âge ont-ils / ont-elles (correct but a bit precious), quel âge est-ce qu'ils ont / qu'elles ont (casual in spoken French)
quel âge as-tu (quite correct)quel âge tu as (not grammatically perfect but much more in use)
"quel âge a ta soeur ?"
To ask "How old is your brother?" in French, you can say "Quel âge a ton frère ?"
How old are you? = Quel âge avez-vous?
quel âge a la tour Eiffel ? -