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2014-07-11T12:38:57+05:30

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The whole sum is in the S.I. Unit:

Speed= 75km/hr
         =  \frac{75×1000}{60×60} m/s
         =  \frac{125}{6} m/s

1) Time= 20 mins= 20×60 secs= 1200secs
Distance = Speed×Time
D=  \frac{125}{6} ×1200 metres
D= 25000 m= 25 km

2) Distance= 250km = (250×1000) metre, Speed= \frac{125}{6}
Time= \frac{Distance}{Speed}
T=12000secs= 3.33 hour

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2) t = 3 1/3h = 3h 20min. not 3.33 h
but the user can convert it
2014-07-11T12:54:33+05:30
Speed of trian = 75 km/hr = 75 km in 60 min

60 min     -   distance covered 75 km
20 min     - distance covered = ?

i) Distance =  \frac{20}{60} X 75 = 25 Km

To cover a distance of 75 km it takes 60 min
to cover a distance of 250 km, how many min?

time =  \frac{250}{75} X 60 = 200 minutes = 3  hours 20 min



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