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Ravi
:
A coach took 3 and half hours to travel a distance of 240 km/h from Delhi to Mumbai. It travelled part of the journey at an average speed of 60 km/h and the rest of the journey at 75 km/h. calculate the distance it travelled at 60 km/h.
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October 20, 2015 at 3:51pm
Shu Yun
:
Distance of 240km u mean?? let x be the time travelled at 60km/h. 60x + 75(3.5-x) = 240 60x + 262.5-75x = 240 -15x = -22.5 x = 1.5h Hence distance travelled at 60km/h = 60(1.5) = 90km
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October 21, 2015 at 12:57pm
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