Question
The agricultural pest Spodoptera litura belongs to which
insect family?Solution
Spodoptera litura is a noctuid moth species that causes extensive defoliation in many crops
Boat ‘A’ can cover 120 km in still water in 10 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 4:5 and the sp...
A boat travels downstream and then returns upstream but only up to 60% of the downstream distance. The total journey takes 18 hours. The downstream spee...
A boat can travel 12 km more in downstream than that in upstream, in 3 hours while the difference between the time taken by the same boat to travel 180 ...
A boy can swim a certain distance downstream in 3 hours and return in 8 hours. If the rate of stream is 5 kmph then what is the speed of boy in still wa...
The speed of a boat downstream is 20% more than the speed of the boat in still water. If the boat can travel 1280 km upstream in 16 hours, then find the...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 875 km downstream is 17.5 hours. Find t...
The speed of boat downstream and upstream is 36 km/hr and 26 km/hr respectively. Time taken to travel a distance of (k + 60) km downstream and (l + 40) ...
The speed of the stream is 12 km/h, and the speed of the boat in still water is 50% greater than the speed of the stream. Calcula...
A boat goes 52 km in upstream in 4 hours and takes 3 hours to complete a distance of 15 km in downstream. Find the speed of boat in still water.
The speed of a boat is that of the current of water is 40:3. The boat goes along with the current in 3 hours 8 minutes. It will come back in
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