Question
Sohan was travelling on one side of the express way with
a constant speed of 80 kmph in his car while Mohan was travelling with a constant speed of 50 kmph in the opposite direction. When they crossed each other, Sohan decided to take a U-turn and meet him. But before taking a U turn, Sohan had to travel for another 12 minutes. How long will it take for Sohan to meet Mohan? [Assume time taken by Sohan to take U turn is negligible]Solution
Distance Travelled by Sohan in 12 minutes = 12/60 × 80 = 16 km Distance travelled by Mohan in 12 minutes = 12/60 × 50 = 10 km Hence Sohan will have to travel a distance of 26 km before catching up with Mohan. Relative speed of Sohan to that of Mohan after taking U turn = 80 – 50 = 30 kmph Time taken by Sohan after taking U turn to Meet Mohan = 26/30 × 60 = 52 minutes Total time taken by Sohan to meet Mohan = (12 + 52) minutes = 64 minutes
Two pipes A and B can fill a tank in 12 hours and 16 hours, respectively. A third pipe C can empty the tank in 24 hours. If all three pipes are opened t...
A and B together can complete a task in 12 days. B alone can complete it in 20 days. How long will it take A to complete the task if he works alone?
From a group of 7 men and 4 women, a committee of 4 persons is to be formed. The probability that the committee has at least one woman is:
In a 240 ml mixture containing milk and honey, honey makes up 56.25% of the total mixture. After removing 'p' ml of this mixture, 8 ml of honey is added...
A group of 20 boys can complete a task in 15 days. Similarly, 24 girls can finish the same task in 20 days. If the ratio of the e...
Find the difference between the smallest number of five digits and greatest number of four digits?
Determine the mean of the following observations:
24, 26, 22, 25, 20, 21, 24, 25- VLC Media Player is an example of which category of application software?
In how many ways can 5 boys and 5 girls sit around a circle such that no two boys sit adjacent and no two girls sit adjacent?
