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Mathematics 7 Online
OpenStudy (anonymous):

In a certain race competition of 2100 metres race, Vijay can cover a distance of 1km in 5 minutes. Vijay beats Nandini by 100 metres, what is time taken by Nandini to cover the same distance?

OpenStudy (anonymous):

i got it

OpenStudy (anonymous):

2100/5=420m per minute so time 5 minutes and nandhini runs in so 2000/5=400m and then 20/3m per second for 100 meter it takes 15 seconds so answer is 5 min and 15 secs

OpenStudy (anonymous):

is it right

OpenStudy (anonymous):

shall i close the question to post anther q

OpenStudy (anonymous):

@robtobey

OpenStudy (anonymous):

Refer to the Mathematica calculation attached.

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