Question

a train is running at a speed of 48km/ h .How long will it take to reach at the distance of 80 meters from the starting platform ?


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Answer 1

Answer:

(1) s – r = 10 --> since r and s are integers and s – r = 10 then there will be 9 integers between them. For example take s=10 and r=0, then there are following integers between them: 1, 2, 3, 4, 5, 6, 7, 8, and 9.