Question
Meena left from her house on a scooter at 18 m/s. Her sister Neha started 6 seconds later on a bike and caught up to Meena in 36 seconds. What was Neha's speed?
Solution
ATQ,
Distance covered by Meena in 6 seconds = 18 × 6 = 108 metres
Relative speed between Neha and Meena = 108 ÷ 36 = 3 m/s
Neha must be faster.
So, Neha’s speed = 18 + 3 = 21 m/s
More Time and distance Questions
- A swimmer decided to swim for 8 hours. He swims 8 laps in an hour. He takes a break of 20 minutes after every hour. How many laps does he complete in 8 hou...
- A scooter moving at 35 km/hr increased its speed by 5 km/hr after ‘x’ hours and travelled (x + 10) hours more. If it travelled 540 km during those (x + 10)...
- X started to run from point ‘A’ to ‘B’ at a speed of 21 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 18 km/hr at 11:00 am. If ...
- A man running with the speed of 55 km/hr covers a certain distance in ‘x’ hours. If the same distance can be travelled with a speed of 60 km/h in (x - 2) h...
- A train 400 meters long passes a platform of length 200 meters in 36 seconds. What is the speed of the train in km/h?
- ‘A’ and ‘B’ started moving towards each other at same time with a speed of 8 km/hr and 10 km/hr, respectively. If the distance cove...
- A car travels at 60 km/h to reach its destination on time. If it travels at 65 km/h, it will reach the destination 30 minutes earlier. Find the time taken ...
- A train was initially moving at 60 km/hr, then increased its speed by 15 km/hr after ‘z’ hours and continued for (z + 8) hours more. If the distance covere...
- A train travels 120 km at a speed of 60 km/h and then travels another 80 km at a speed of 40 km/h. What is the average speed for the entire journey?
- Ratio of speeds of ‘A’ and ‘B’ is 6:11, respectively. If they participate in a 220-metre race and ‘B’ gives ‘A’, a head start of ‘m’ metres, then they fini...
Relevant for Exams:
