Amit travelled a distance of 50 km in 9 hours. He travelled partly on foot at 5 km/h and partly by bicycle at 10 km/h. The distance travelled on the bicycle is:
Answer & explanation
Correct answer: option 2
Average speed = \(\frac{50}{9}\) km/h
Using allegation method :-
Ratio of time to cover distance by bicycle or on foot = \(\frac{5}{9}\) : \(\frac{40}{9}\)
= 1 : 8
9R = 9 hours
1R = 1 hour
Time taken by cycle = 1 hour
Distance = Speed × Time
= 10 × 1 = 10 km