Could you give the "given" angle measures?
le'ts take a peek at the ages, 9, 6 and 5, so their ratio will be in the order of 9:6:5, what we firstly do is divide the total by that many pieces, namely 100 ÷ (9+6+5) and then distribute accordingly.
Here for your points sorryyyyyy❤️
Actually you can only compare the denominators, because you have to find the common denominator