Question : Find the average speed of a boy if he walks $\frac{1}{6}$th distance with a speed of 5 km/hr and rides a bike to cover the remaining distance at a speed of 25 km/hr. The total distance is 60 km.
Option 1: 15 km/hr
Option 2: 20 km/hr
Option 3: 12 km/hr
Option 4: 13 km/hr
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 15 km/hr
Solution : Given: A boy walks $\frac{1}{6}$th distance with a speed of 5 km/hr and rides a bike to cover the remaining distance at a speed of 25 km/hr. The total distance is 60 km. The distance covered on foot = $\frac{60}{6}$ = 10 km The distance covered on bike = 60 – 10 = 50 km The total time taken = $\frac{10}{5}$ + $\frac{50}{25}$ = 2 + 2 = 4 hours So, the average speed $=\frac{\text{Total distance}}{\text{Total time}}=\frac{60}{4} = 15$ km/hr Hence, the correct answer is 15 km/hr.
Answer Key | Cutoff | Selection Process | Preparation Tips | Eligibility | Application | Exam Pattern
Question : A man covers half part of a certain distance at 15 km/hr. He covers 40 percent of the remaining distance at the speed of 12 km/hr and covers the rest of the distance at the speed of 21 km/hr. What is his average speed for the entire journey?
Question : A man covers half part of a certain distance at 25 km/hr. He covers 40% of the remaining distance at the speed of 8 km/hr and covers the rest of the distance at the speed of 18 km/hr. What is his average speed for the entire journey?
Question : A bullock cart has to cover a distance of 120 km in 15 hours. If it covers half of the journey in $\frac{3}{5}$th time, the speed to cover the remaining distance in the time left has to be:
Question : A car has to cover a distance of 288 km in 20 hours. If it covers half of the journey in $\frac{1}{5}$th of the time, find the speed to cover the remaining distance in the time left.
Question : A man covers half part of a certain distance at 60 km/hr. He covers 40% of the remaining distance at the speed of 12 km/hr and covers the rest of the distance at the speed of 18 km/hr. What is his average speed for the entire journey?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile