Jeremy discovered he has a leak coming from the water heater in his basement. Jeremy is planning to use buckets to catch the dripping water. He places a bucket under the drip and steps outside to walk the dog. In half an hour, the bucket is 15 of the way full. Part A. What is the rate at which the water is leaking per hour? Show or explain your answer.

Part B. How long will it take for the bucket to be filled to the top? Show or explain your answer.