Question
A man starts his journey from point ‘P’ to point
‘Q’. He covers (1/5)th of the total distance in 2 hours and the rest in 8 hours. If he takes 10 hours to return to point ‘P’ from point ‘Q’, then determine his average speed for the complete journey if the distance between ‘P’ and ‘Q’ is 50 km.Solution
ATQ,
Average speed = total distance covered ÷ total time taken
Total time taken = 2 + 8 + 10 = 20 hours
Total distance covered = 50 × 2 = 100 km.
Required average speed = 100/20 = 5 km/h
Amit drove for 6 hours at a speed of 60 miles per hour and for 6 hours at 50 miles per hour. What was his average speed (in miles per hour) for the whol...
The speed of a bike increases by 5 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 10 km, the find the total distance tra...
A man travels some distance at a speed of 12 km/hr and returns at a speed of 9 km/hr. If the total time taken by him is 4 hrs 40 min, the distance is
A train traveling at a speed of 90 km/h crosses a platform of length 200 meters in 24 seconds. What is the length of the train?
The ratio of the speeds of Y and Z is 7 : 5. When Y increases his speed by 40%, he covers 294 km in 3 hours. Find the time taken by Z to cover 200 km.
The speed of ‘A’ and ‘B’ is 30 km/hr and 12 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ hours is 360 km more than that by...
- From a total of 280 km, Sumit covered some distance by train at 70 km/h and the rest by bus at 35 km/h. If the entire trip took 5.8 hours, how much distanc...
Speed of a car and a bus is 20 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘9x’ km is 4 hour less than time ...
Two guns were fired from the same place at an interval of 20 minutes but a person in a train approaching the place hears the sound 16 minutes 30 seconds...
A, B, and C run around a Circular track starting from the same point simultaneously and in the same direction at 12 km/h, 24 km/h, and 36 km/h respectiv...
Relevant for Exams:
