Question
Ratio of speeds of βAβ and βBβ is 6:11,
respectively. If they participate in a 220-metre race and βBβ gives βAβ, a head start of βmβ metres, then they finish the race at the same time. Find the value of βmβ.Solution
Let the distance covered by βAβ in the time βBβ covers 220 metres be βxβ metres (x/220) = (6/11) Or, x = 120 So, m = 220β 120 = 100 metres
It takes 12 hours less to travel from point 'C' to point 'D' at a speed of 50 km/h than it takes to travel the same distance at 20 km/h. If 50% of the d...
Aman takes 2 hours to bike from point 'M' to point 'N' at a speed of 25 km/h. He then increases his speed by 80% and takes 3 hours to reach point 'O' fr...
The average speed of a bus is 2/3 of the average speed of a car which covers 1800 km in 20 hrs. What is the average speed of the bus?
A aeroplane covers a distance of 7200 km in 80 hours. What is the speed (in kmph) of the aeroplane?
'V' can complete (1/2) of a project in 30 days, and 'V' along with 'W' can complete the entire project in 20 days. Determine the time 'W' requires to co...
A cheetah can catch a deer running with a speed of 54 km/h and is 63 meters ahead of it, in 12 seconds. Find the time taken by the cheetah to catch a ze...
In a 500-metre race, βAβ beats βBβ by 15 seconds or 75 metres. Find the time taken by βBβ to finish the race.
Which of the following can be true?
i. R reached the destination in 5hrs and P reached the destination in 3 hrs
ii. R reached the desti...
A man travels some distance at a speed of 36 km/hr and returns at a speed of 27 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is <...
Two trains of lengths 280 meters and 320 meters are running in the same direction at speeds of 54 km/h and 72 km/h, respectively. How much time will the...