Question
Mustard saw fly (Athalia lugens proxima) pupates in
____ÂSolution
In mustard sawfly the pupation is in water proof oval cocoons in soil and the pupal period is 11-31 days.
Speed of a boat in still water is 15 km/h while the speed of the stream is ____ km/h. Total time taken by the boat to go 150 km upstream and 225 km down...
A boat can cover 72 km in still water and 60 km in downstream in 4 hours and 3 hours respectively. Find the time taken by the boat to cover 60 km upstre...
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...
A boat goes 200 km downstream in 50 hours, and 90 km upstream in 30 hours. The speed of the stream is
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 a boat in still water is 40% less than its speed while moving downstream. If the boat takes 8 hours to travel 160 km upstream, how long will i...
The speed of a boat in still water is 8 km/hr and the speed of the stream is 2 km/hr. A man rows to a place at a distance of 30 km and comes back to the...
- A boat takes 4 hours to travel a distance of '4D' km upstream. However, it covers a distance of (4D + 8) km downstream in just 2 hours. Given that the boat...
If the speed of a boat in a still water is 20 km per hour and the speed of current is 5 km per hour then the time taken by the boat to travel 100 KM wit...
The speed of current is 8 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if one fifth of the distance cov...
Relevant for Exams:
