Here, past tense should be used. So, ‘is watching’ should be changed to ‘had watched’.
A Boy can swim 12 km/hr in still water. If the velocity of the stream is 6 km/hr, the time taken by him to swim a place 28 km upstream and back is
The speed of the boat A and B in still water are in the ratio 15:13. The speed of the current for both boats is 16 km/hr. If the sum of time taken by bo...
A boat running downstream covers a distance of 24 km in 3 hrs while it covers the same distance upstream in 6 hrs. Then speed of the boat in still water is
A boat has a speed of 30 km/h in still water. When the boat travels downstream in a stream, its speed increases by 50% compared to when it moves upstre...
Two Places are 162 km apart. Two boats starts from both Places at same time towards each other. If one boat is going downstream and other one is going u...
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.
A boat takes 1/12th time in moving a certain distance downstream than upstream. The ratio of the speed of the boat in still water and that of the curren...
A man goes downstream with a boat to some destination and returns upstream to his original place in 10hours. If the speed of the boat in still water a...
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 rows upstream 18 km and downstream 30 km taking 6 hours each. Find the man’s speed in still water.
