Please help me solve this problem.

PC.51 The Creperie launched their business amidst great expectations. At the time of launch they were able to produce 23 crepes per hour. After making some adjustments to the booth layout they were able to increase throughput and produce 39 crepes per hour. Prior to making changes to their process, what was the Creperie's productivity in terms of crepes produced per minute? (Display your answer to two decimal places.) Number After making changes to their process, what was the Creperie's productivity in terms of crepes produced per minute? (Round your answer to two decimal places.) Number By what percentage did the Creperie's productivity improve? (Write your answer as a percentage, and display your answer to two decimal places.)