Question
Which pest is known as national
pest?Solution
White grubs are root feeders and their beetles feeds on the leaves of host plants. They cause damage to roots of commercial crops the damage caused by the White grub up to 70%.
Speed of a boat in still water is 6 times more than the speed of stream. If boat covers 144 km in downstream in 9 hours, then find the time taken by the...
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Speed of a boat in still water to speed of boat in upstream is 12:7. If the boat can travel 340 km in downstream in 5 hours, then find the time taken by...
Speed of a boat in still water to speed of boat in upstream is 10:7. If the boat can travel 390 km in downstream in 5 hours, then find the time taken by...
Ratio of speed of boat in downstream and speed of stream is 7:5, if speed of current is 5 km/hr, then find distance travelled (in km) upstream in 4 hours.
A boat covers 150 km downstream in the same time it takes to cover 90 km upstream. If the speed of the stream is 5 km/h, determine the speed of the boat...
Speed of a boat in still water is 5 times more than the speed of stream. If boat covers 147 km in downstream in 7 hours, then find the time taken by the...
Speed of a boat in still water to speed of boat in upstream is 13:10. If the boat can travel 320 km in downstream in 5 hours, then find the time taken b...
