A train has an average speed of 50km/hr over 150 km and it travels at variable speed throughout its journey. The train travels slowest when it crosses a platform with a constant speed. The train is 100m long and the platform is 1250 m long. If the train takes 10minutess to cross the platform, what is the speed of the train during the rest of the journey?
1). 52.5 km/hr
2). 60 km/hr
3). 54.3 km/hr
4). 63.5 km/hr
The speed of a stream is 4 km/hr. A boat goes 20 km upstream and then goes 30 km downstream. The total time it takes is 7 hours and 30 minutes. What is the speed of boat in still water (in km/hr)?
1). 10
2). 8
3). 12
4). 15
A missile travels at 1296 km/h. How many metres does it travel in one second?
1). 320 metres
2). 360 metres
3). 341 metres
4). 334 metres
Carnival vista is a cruise ship. It can travel 125 km along the stream in 1 hours 15 minutes. If speed of the ship in still water is 75 km/h, then find the time taken by the ship to cover the same distance against the stream.
1). 5/4 hours
2). 5/2 hours
3). 5/3 hours
4). 5 hours
A man travels 2/15 of the total journey by rail, 9/20 by car and the remaining 10 km on foot. His total journey in km is
1). 36
2). 40
3). 30
4). 24