7. Ravi travels a distance of 21/2 km and comes back in 2 hours 20 minutes. What is his speed? the answer is 9 km/ hr and if you will spam the answer will be reported so if you know the explanation then only answer I want the explanation
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distance travelled =21/2
time taken=2h20min
speed=distance/time
=21/2x2x1/3
=21x3/4
=63/4
=15.75km/hr
this is the required answer.
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