How long will it take to row 20 km upstream if one can row 10 km in 10 minutes in still water and the same distance in 8 minutes with the stream?
How long will it take to row 20 km upstream if one can row 10 km in 10 minutes in still water and the same distance in 8 minutes with the stream?
A hot air balloon covered 2100 miles in 7 days. If it covered 50 miles more each day than the day before, how many miles did it cover on the last day?
A hot air balloon covered 2100 miles in 7 days. If it covered 50 miles more each day than the day before, how many miles did it cover on the last day?
5 cars, each having a different speed, are going along a 1-lane road, so no passing is possible. Cars are numbered from 1 to 5, with Car 1 being the slowest and 5 the fastest. Eventually, the cars accumulate in packets, with the "fast" cars tailgating the "slow" ones. If the initial order was 1 5 2 4 3, how many packets will we end up with?
5 cars, each having a different speed, are going along a 1-lane road, so no passing is possible. Cars are numbered from 1 to 5, with Car 1 being the slowest and 5 the fastest. Eventually, the cars accumulate in packets, with the "fast" cars tailgating the "slow" ones. If the initial order was 1 5 2 4 3, how many packets will we end up with?
A car during its journey travels 30 minutes at a speed of 40 km/hr, another 45 minutes at a speed of 60 km/hr and 2 hours at a speed of 70 km/hr. Find its average.
A car during its journey travels 30 minutes at a speed of 40 km/hr, another 45 minutes at a speed of 60 km/hr and 2 hours at a speed of 70 km/hr. Find its average.
A thief is spotted by a policeman from a distance of 400 metre. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief as 10 km/hr and that of police man as 15 km/hr how far would the thief have run, before he is caught?
A thief is spotted by a policeman from a distance of 400 metre. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief as 10 km/hr and that of police man as 15 km/hr how far would the thief have run, before he is caught?
Three men go to stay at a motel, and the man at the desk charges them $ 30.00 for a room. They split the cost ten dollars each. Later the manager tells the desk man that he overcharged the men, that the actual cost should have been $ 25.00. The manager gives the bellboy $ 5.00 and tells him to give it to the men. The bellboy, however, decides to cheat the men and pockets some money. Now each man has paid $ 9.00 to stay in the room. How much has the bellboy pocketed?
Three men go to stay at a motel, and the man at the desk charges them $ 30.00 for a room. They split the cost ten dollars each. Later the manager tells the desk man that he overcharged the men, that the actual cost should have been $ 25.00. The manager gives the bellboy $ 5.00 and tells him to give it to the men. The bellboy, however, decides to cheat the men and pockets some money. Now each man has paid $ 9.00 to stay in the room. How much has the bellboy pocketed?
To travel 600 km, train X takes 8 hours more than train Y. If the speed of train X is doubled, it takes 2 hours less than train Y. The speed of train Y is
To travel 600 km, train X takes 8 hours more than train Y. If the speed of train X is doubled, it takes 2 hours less than train Y. The speed of train Y is
A train travelling at 78 km/hr crosses a girl sitting in a train of length 110 m travelling in the same direction at 42 km/hr in 20 seconds. The length of the faster train is _________
A train travelling at 78 km/hr crosses a girl sitting in a train of length 110 m travelling in the same direction at 42 km/hr in 20 seconds. The length of the faster train is _________
I cover 2 /3 rd of the distance that I have to travel at 40 km/hr and the remaining at 30 km/hr. What is the average speed at which I cover the entire distance?
I cover 2 /3 rd of the distance that I have to travel at 40 km/hr and the remaining at 30 km/hr. What is the average speed at which I cover the entire distance?
If a car travels a distance of 240 km in 6 hours, partly at a speed of 60 km/hr and partly at 30 km/hr, then find the time it travels at 60 km/hr.
If a car travels a distance of 240 km in 6 hours, partly at a speed of 60 km/hr and partly at 30 km/hr, then find the time it travels at 60 km/hr.
Two cyclists do the same journey by travelling at 9 and 10 km/hr respectively. Find the distance travelled when one takes 32 minutes longer than the other.
Two cyclists do the same journey by travelling at 9 and 10 km/hr respectively. Find the distance travelled when one takes 32 minutes longer than the other.
A is \({5 \over{3}}\) times as fast as B. If A gives B a start of 60 metre, how long should the racecourse be so that both of them finish the race at the same time?
A is \({5 \over{3}}\) times as fast as B. If A gives B a start of 60 metre, how long should the racecourse be so that both of them finish the race at the same time?
A train traveling at the speed of 65 kmph leaves Bombay at 10 a.m. and another train traveling at the speed of 75 kmph at 12 noon leaves Bombay, travelling in the same direction. At how many km from Bombay will they be together?
A train traveling at the speed of 65 kmph leaves Bombay at 10 a.m. and another train traveling at the speed of 75 kmph at 12 noon leaves Bombay, travelling in the same direction. At how many km from Bombay will they be together?
A man rows 40 km upstream in 8 hours and a distance of 36 km downstream in 6 hours. Then the speed of the man in still water is ________
A man rows 40 km upstream in 8 hours and a distance of 36 km downstream in 6 hours. Then the speed of the man in still water is ________
Local trains leave from a station at an interval of 15 minutes at a speed of 36 km/hr. A man moving in the opposite direction meets the trains at an interval of 12 minutes. Find the speed of the man __________
Local trains leave from a station at an interval of 15 minutes at a speed of 36 km/hr. A man moving in the opposite direction meets the trains at an interval of 12 minutes. Find the speed of the man __________
Jack climbed up the beanstalk at a uniform rate. At 2 p.m. he was one-sixth the way up and at 4 p.m. he was three fourths the way up. At what time did he start climbing approximately?
Jack climbed up the beanstalk at a uniform rate. At 2 p.m. he was one-sixth the way up and at 4 p.m. he was three fourths the way up. At what time did he start climbing approximately?
X runs 1 ¼ times as fast as Y. If X gives Y a start of 200 metre, how far would Y have run before he is caught by X?
X runs 1 ¼ times as fast as Y. If X gives Y a start of 200 metre, how far would Y have run before he is caught by X?
. In a game of billiards, A can give B 12 points in 60 and A can give C 10 in 90. How many points can C give B in a game of 70?
. In a game of billiards, A can give B 12 points in 60 and A can give C 10 in 90. How many points can C give B in a game of 70?
In a 500 metre race, the ratio of speeds of two contestants A and B is 3 : 4. A has a start of 140 metre, then .
In a 500 metre race, the ratio of speeds of two contestants A and B is 3 : 4. A has a start of 140 metre, then .
A man is walking at a speed of 10 km per hour. After every kilometre, he takes rest for 5 minutes. How much time will he take to cover a distance of 5 km?
A man is walking at a speed of 10 km per hour. After every kilometre, he takes rest for 5 minutes. How much time will he take to cover a distance of 5 km?