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Let the time she ran be t hours. Case 1: At 7 km/h , Distance = 7 × t = 7t Case 2: At 14 km/h, Distance = 14 × t = 14t Acc to the question: If she had run at 14 km/h, she would have covered 20 km more than at 7 km/h: 14 t = 7t + 20 t = 20/7 Now, the actual distance she ran at 7 km/h: 7 x t = 7 x 20/7 = 20 km
The speed of a boat in still water is 32km/hr and the speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B a...
Boat ‘A’ can cover 120 km in still water in 12 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:4 and the sp...
A boat can cover 195 km in downstream in 10 hours and 140 km in upstream in 14 hours. Find the distance travelled by the boat in still water in 4 hours.
The difference between the downstream speed and the upstream speed of a boat is 6km/hr and the boat travels 72km from C to D (downstream) in 4 hours. Th...
A man can row at 4 kmph in still water. If the velocity of current is 2 kmph and it takes him 8 hour to row to a place and come back, how far is the place?
A boat can cover 220 km in downstream in 10 hours and 170 km in upstream in 17 hours. Find the distance travelled by the boat in still water in 5 hours.
The speed of a boat in still water is 20 km/hr. If the boat covers 120 km in upstream in 12 hours, then find the time taken by the boat to travel 150 km...
A man swims 2km/h against the stream and goes 1 km in 10 minutes along the stream, how much time will it take to cover 5 km in still water?
A boat takes 7 hours to cover 245 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 410 km upstream and 495 k...
The speed of a boat in calm water is 4 km/hr greater than the speed of the stream. The boat travels a distance of 280 km downstream and 200 km upstream ...
