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A car travels a certain distance taking 7 hrs in forward
journey, during the return journey increased speed
12km/hr takes the times 5 hrs.What is the distance travelled
Options Are :
10Kms
20Kms
30Kms
40Kms
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Answer Posted / mohammed siddiqui
options are wrong, the correct answer is 210 km
s= d/7 forward (speed = dist/time)
s+12 = d/5 return journey
d/7 + 12 = d/5
d/7 - d/5 = -12
(5d - 7d)/35 = -12
-2d = -12x 35
d = 210
| Is This Answer Correct ? | 56 Yes | 15 No |
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