Speed
Speed
TGM Original Questions
Alex swam 1.5 kilometres in a pool in 30 minutes. He took a break for 20 minutes before swimming back at an average speed 20% slower than his original average speed.
Find
- Alex’s original swimming speed, in km/h.
- the time taken for Alex to swim back, in minutes.
- Alex’s average speed for the entire swim, in m/s.
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Answer:(a) \(3\text{ km/h}\) (b) \(37.5\) minutes (c) \(\dfrac47\text{ m/s}\)
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