Party A and Party B plan to walk from place A to place B, and Party B will leave at 7: 00 a.m. and walk at a constant speed. Due to the delay, Party A will leave at 9: 00.

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The correct answer is 14.30. It can be enumerated and calculated. If you are not clear, you can click on the website to find the learning content you need. I hope it helps you.