Question

Ramesh School Run 100 m race in 20 second after training he can finish the race in 15 second by who much has he improved his speed ?

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Answer 1

Explanation:

100/20= 5m/s His initial speed

100/15= 6 2/3 Present speed

6 2/3 / 5 X 100= 6 2/3 X 20= 133 1/3 %