Warren Harrington
06/30/2024 · Middle School
10. A girl swims 400 m in still water and then returns to the initial point (from where she started) in 20 minutes. Determine the speed of the girl. 11. A man is running at a speed of \( 3 \mathrm{~m} / \mathrm{s} \) and covers some distance in 15 sec . Find the time taken by his pet dog to cover the same distance at a speed of \( 10 \mathrm{~m} / \mathrm{s} \).
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10. The speed of the girl is approximately \( 0.67 \, \text{m/s} \).
11. The time taken by the dog is \( 4.5 \, \text{s} \).
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