Question
A sedan clocks 324 km in 4 hours. The motorbike is 5.5
m/s slower than the sedan. Compute the distance (in metres) the bike covers in 1 minute 40 seconds.Solution
ATQ,
Speed of sedan = (324/4) = 81 km/h = 81 × (5/18) = 22.5 m/s
Speed of bike = 22.5 − 5.5 = 17 m/s
1 minute 40 seconds = 60 + 40 = 100 seconds
Required distance = 17 × 100 = 1,700 metres
- In a race of 1.5 km, 'R' gives 'S' a head start of 250 metres and still defeats him by 150 metres. If 'S' takes 18 minutes to complete the race, how long d...
The speed of two cars A and B are in the ratio of 12:15 respectively. Car A travels 15 km less than the car B in the same time duration. What was the di...
A car of length 100 meters crosses a stationary pole in 5 seconds. Another car moving at double the speed of the first car crosses a stationary truck in...
- A security guard notices a suspect 120 meters ahead and starts chasing him. The suspect runs at a speed of 18 m/sec, while the security guard runs at 22 m/...
A and B move towards each other at the same time at the speeds of 15 km/h and 25 km/h, respectively and the distance between them is 60 km. How much is ...
The speed of a train is 36 km/hr and it takes 12 seconds to cross a man. Find the time taken by train to cross a platform if the ratio of the length of ...
‘E’ and ‘F’ are going from place ‘R’ to place ‘S’, which is 900 km apart. If ‘E’ started 2.5 hours after ‘F’ but both of them re...
A train has to cover a distance of 400 km in 25 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
A person walks at 5 km/h and runs at 10 km/h. He covers 18 km, and his walking time is twice his running time. Find the total time taken.
A person walks a certain distance in three parts. For the first 'w - 10' km, he walks at 5 km/h, for the next 'w' km at 10 km/h, and for the final 'w + ...
Relevant for Exams:
