Question
Primitive living winged insects belonging to the
order:Solution
Primitive living winged insects belong to the order Ephemeroptera (mayflies) and Odonata (dragonflies). These orders consist of relatively ancient and primitive winged insects.
A boat can cover 130 km in downstream in 10 hours and 120 km in upstream in 8 hours. Find the speed of boat in still water
A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and...
The speed of current is 35 km/hr. If the speed of the boat in still water had been 10 km/hr more than the original speed then it would take 6.2 hours to...
A boat can cover 120 km in upstream in 15 hours and 135 km in Downstream in 5 hours. Find the speed of boat in still water.
A boat covers 144 km upstream and 192 km downstream in equal durations. If it takes 5 hours to travel 140 km in still water, determine the time the boat...
A boy can swim a certain distance downstream in 4 hours and return in 5 hours. If the rate of stream is 3 kmph then what is the speed of boy in still wa...
Find the ratio between the speed of the boat and the speed of the stream.
The speed of the boat while travelling upstream is 24km/hr. The boat ...
The speed of a boat in still water is 6 km/hr and speed of current is 4 km/hr. If time taken to cover a certain distance upstream is 10 hours, then how ...
The speed of a boat in still water is 2 times more than that of the current. If the boat takes 12 hours to cover 144 km upstream, then find the time tak...
The speed of a boat in still water is 20 km/hr. If the boat covers 80 km in upstream in 8 hours, then find the time taken by the boat to travel 150 km i...
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