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Quantitative Aptitude ( CCS) Time & distance

A car completes a journey in 6 hours. It covers half the distance at 50 km/hr and the rest at 70 km/hr. The length of the journey is

165 KM

175 KM

185 KM

None of these

Let the total distance be 2d km.

Now, since first half of journey is done at 50 km/h and the second half of journey is done at 70 km/h, the total time taken is:

d/50 + d/75 = 6 hours ( given total journey time is 11 hour)

= 5d / 150 = 6

= d = 180 km or Total distance travelled= 2 × 180 = 360 km

Hence, option 4 is the correct answer.

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