A man travelled a distance of 90Km in 9 hours partly on foot at 8 kmph and partly on bicycle at 17 kmph.
Find the distance travelled on foot.
Solution:Option(B) is correct
Distance covered in 1 hour on foot = 8 km
Distance covered in 1 hour on bicycle = 17 km
Average distance covered in 1 hour = 90/9 km = 10km (mean distance)
Distance covered in Distance covered in
1 hour on foot 1 hour on bicycle
(8 km) (17 km)
(17 – 10) : (10 – 8)
Thus out of 9 hours, he took 7 hours on foot
Distance covered on foot $= (8 \times 7)$ Km
Error(s) Found !!!
Aman Mathur (Apr 07'17 at 16:59)
Let distance travelled on foot be x km. Therefore, distance travelled by bicycle is (90-x) km.
Now, x/8 + (90-x)/17 = 9 (Total time taken)
=>x = 56
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