For the three-part question that follows, provide your answer to each part in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C. At the beginning of the summer, a camp has 450 campers and 30 counselors.

Part A: By midsummer, an additional 90 campers join the camp. How many additional counselors are needed to keep the same ratio of campers to counselors? Write a proportion and solve.

Part B: By the end of the summer, 2/3 of the campers plan to come back next year. How many campers can they expect back next year? Write a proportion and solve.

Part C: How many counselors will they need next year for the estimated returning campers? Write a proportion and solve.