Circulating Tracks: Problem 1

Problem: W and Z are riding their bikes on a circulating pathway. They start at the same time, same place, going in two opposite directions. This entire pathway is 2400 meters, and W needs 10 minutes to go around by herself. On their first time meeting, W rode 1440 meters.
(1) What is W's speed?

(2) How long did it take for W and Z to meet at the first time?

(3) How long will it take for Z to go around the pathway once, by himself?

(4) How long from their first meeting will there be to their second meeting?

Meet-Up Problems: https://youtube.com/playlist?list=PLytgs3PKtgQ6R0tV0PLye8rbV7F9W8ykx

Key: Use formulas

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