The use of synthetic pyrethroids has caused serious outbreaks of
The use of synthetic pyrethroids, which are insecticides commonly used for pest control, has been associated with serious outbreaks of the mango mealy bug (Drosicha mangiferae).
A man rows upstream 10 km and downstream 15 km taking 5 hours each. Find the man’s speed in still water.
...When travelling downstream, a boat takes 5.25 hours to travel 252 km. If the speed of the stream is (3/8)th of downstream speed of the boat, ...
Speed of a boat in still water is three times the speed of the boat in upstream. If the boat takes 25 minutes to cover 50 km in downstream, then find th...
A man can row at a speed of 64 km/h in still water to a certain upstream point and back to the starting point in a river which flows at 8 km/h. Find his...
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...
The downstream speed of a boat is 8 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
The speed of current is 4 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if half of the distance covered ...
The speed of a boat in still water is 5 km/hr and speed of current is 3 km/hr. If time taken to cover a certain distance upstream is 12 hours, then how ...
Ratio of speed of boat in downstream and speed of stream is 5:2, if speed of current is 4 km/hr, then find distance travelled (in km) upstream in 6 hours.
The speed of current is 5 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if half of the distance covered ...
