In a road network covering 10 cities, city C can be reached only from city A or city B. The distance from A to C is 50 kms. and the same from from B to C 25 kms. The shortest distance from a city P to A is 200 kms. and the shortest distance from city P to B is 230 kms. Then the shortest distance from city P to city C is
Correct Answer : A
If 9 engines consume 24 metric tonnes of coal, when each is working 8 hours a day; how much coal will be required for 8 engines, each running 13 hours a day, it being given that 3 engines of the former type consume as much as 4 engines of latter type.
Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank
A boat travels 20 kms upstream in 6 hrs and 18 kms downstream in 4 hrs.Find the speed of the boat in still water and the speed of the water current?