help me please I will give you 40 point you have until tonight to answer this question they're only 8 questions so please this answer the question for me

If a DNA strand consisted of 30% T, what percent A would it have?


If a DNA strand consisted of 30% T, what percent G would it have?


If a DNA strand consisted of 10% G, what percent T would it have?


If a DNA strand consisted of 15% A, what percent G would it have?


Why is DNA important in determining the uniqueness of an organism?