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Let the distance from village to school be D km According to the question, ⇒ D/4 + D/3 = 7 ⇒ 7D/12 = 7 ⇒ D = 12 km
The speed of a boat in still water is twice the speed of the current. The difference between downstream and upstream speeds is 16 km/h. If the boat spen...
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is ...
A boy can swim in water with a speed of 15 km/hr in still water. If the speed of the stream is 8 km/hr, what will be the time taken by the boy to cover ...
When travelling downstream, a boat takes 6.25 hours to travel 275 km. If the speed of the stream is (4/11)th of downstream speed of the boat,...
A man goes downstream with a boat to some destination and returns upstream to his original place in 6 hours. If the speed of the boat in still water and...
The ratio of the speed of boats ‘A’ and ‘B’ in still water is 8:9, respectively. The speed of the current is 25% of the speed of boat ‘A’ in...
When travelling downstream, a boat takes 5.25 hours to travel 147 km. If the speed of the stream is (3/7)th of downstream speed of the boat, ...
The duration it takes for boat 'P' to cover 160 km downstream is equal to the duration it takes to cover 120 km upstream. If the ratio of the speed of b...
Speed of a boat in still water is 12 kmph and speed of stream is 6 kmph. A man rows to a place at a distance of 72 km and come back to starting point. T...
A man’s speed with the current is 50 km/hr and the speed of the current is 5 km/hr. The man’s speed against the current is:
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