I would like to know how to use the subjunctive tense with the conditional/future. Which of these sentences is correct?

Question

Je veux que tu étudies les sciences quand tu auras seize ans.

Je veux que tu étudies les sciences quand tu aurais seize ans.

Answer 1

I'll send this to our French expert, SraJMcGin.

Answer 2

If I understand your question, the first is correct to say: “I want you to study sciences when you are (will be) sixteen years old.”

Sra