Question
A boy rides his bicycle 10 km at an average sped of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. His average speed for the entire trip is approximately.
Answer: Option C
Was this answer helpful ?
Total distance travelled = (10+12) km/hr = 22 km/hr.
total time taken = [10/12 + 12/10] hrs = 61/30 hrs
∴ Average speed = [22*30/61] km/hr = 10.8 km/hr.
Was this answer helpful ?
More Questions on This Topic :
Question 1.
A man takes 5 hours 45 min. in walking
to ....
Question 4.
It takes eight hours for a 600 km journey, i....
Question 5.
A person travels equal distances with speeds....
Latest Videos
Latest Test Papers
Submit Solution