A man travelled a distance of 35 km in 5 hours. He travelled partly on foot at the rate of 4 km/h and the rest on bicycle at the rate of 9 km/h. The distance travelled on foot is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 8 km.
| Understanding/Application |
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Let the distance travelled on foot be x. Distance travelled by cycle = 35 - x Speed of the man on foot = 4km/hr Time taken by the man on foot = x/4 Speed of man on bicycle = 9 km/h Time taken by the man on bicycle = (x - 35)/9 |
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Total time taken by the man = 5 hours x/4 + (35 - x)/9 = 5 (9x - 4x)/36 = 5 - 35/9 5x/36 = 10/9 x = 8 km |