If mohini runs at a speed of 25kmper hour,how long will she take to run a 800 -meter race
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Answer: 3min 12s
Step-by-step explanation:
Speed = 25 km/h = 25×5/18
= 75/18m/s
Speed = Distance/Time
75/18 = 800 m/ Time
Time = 800×18/75
Time = 192 s
= 3 min 12s
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