Rajesh walks to and fro to a shopping mall. He spends 30 minutes shopping. If he walks at speed of 10 km an hour, he returns to home at 19.00 hours. If he walks at 15 km an hour, he returns to home at 18.30 hours. How fast must he walk in order to return at 18.15 hours?
I f 09/12/2001 happens to be Sunday, then 09/12/1971 would have been at
A bus started its journey from Ramgarh and reached Devgarh in 44 minutes with its average speed of 50km/hour. If the average speed of the bus is increased by 5 km/hour, how much time will it take to cover the same distance?
Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
In a race of 200m, A can beat B by 31 m and C by 18 m. In a race of 350m, C will beat B by:
A man rows downstream at 32 km and 14 km upstream at 13kmph.the speed of the stream is:
325-(12)² + 75= (?)²-68
A boat covers a certain distance downstream in 1 hour, while it comes back in 1 ½ hours. If the speed of the stream be 3 kmph. What is the speed of the boat in still water?
At what approximate time between 4 and 5 am will the hands o f a clock be at right angle?
A man’s speed with the current is 15 km/hr and the speed of the current is 2.5kmph, the man’s Speed against the current is