Question

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Answer 1

Answer:

$450 \div 20 = 22.5$

22.5 meter in hr

Step-by-step explanation:

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Answer 2

Answer:

Speed = 20 km/hr = 20 × (5/18) = 50/9 m/sec

⇒ Distance = 450 m

⇒ Time = distance/speed = 450/(50/9) = 81 sec

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