0.50 24 times is the answer just multiply them
If we have a common ratio every set amount of time (and not a common difference or addition), this is an exponential relationship. An exponential equation would have a form like Money = (1000)(2)^(# of months), where every additional month would cause the money amount to double.
5:30pm
just add 30 mins to 4:15pm which is 4:45pm then add the 45 mins to that which becomes 5:30pm