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Let speed of the boat in still water be ‘3x’ km/h. Speed of the boat in upstream = 3x ÷ 3 = ‘x’ km/h Speed of the stream = 3x – x = ‘2x’ km/h Speed of the boat in downstream = 3x + 2x = ‘5x’ km/h ATQ; (25/25) × 60 = 60 So, 5x = 60 Or, x = 12 So, speed of the boat in still water = 3 × 12 = 36 km/h
A was travelling from point X to point Y. He increased his speed by 18 km/h after every hour. He reached his destination in 20 hours. If his initial spe...
Two trains X and Y start at the same time in the opposite direction from two points P and Q and arrive at their destinations 25 and 16 hours respectivel...
Buses A and B are moving around a circular ground of radius 280 m. If the speeds of the buses A and B are 12 m/sec and 20 m/sec respectively, then what ...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 7:6 respectively. Ajay left the place 36 seconds after Vishal. If af...
A car travels from city X to city Y at a speed of 80 km/h and returns to city X at a speed of 100 km/h. If the total distance is 360 km, what is the ave...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 9:4 respectively. Ajay left the place 30 seconds after Vishal. If af...
Peter, John and Mike run around a Circular track starting from the same point simultaneously and in the same direction at the speed of 36 kmph, 54 kmph ...
A car can run 564 km on 48 litres of petrol. How many kilometres can it run on 36 litres of petrol?
3 runners run together in the same direction from a place on a circular path of 16 km and their speeds are 4, 6, and 8 km/h, in how many hours will they...
The Shatabdi express from Pune to Delhi was delayed by snowfall for 18 minutes and made up for the delay on a section of 60 km travelling with a speed o...
