What is the primary time of application for a pre-emergence herbicide?
Pre-emergence herbicides are applied before weed seeds germinate, often right after planting crops, to create a barrier that prevents weeds from growing. Therefore they have to be applied 1 to 2 days after sowing of crop.
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...
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...
A man takes 12 hours to row 21 km upstream from point A to point B and back to A by boat. If he takes the same time to row 7 km downstream as upstream. ...
A boat covers 13 km upstream in 52 min. If the speed of the current is 6 km / h, then in how much time will it cover 40 km downstream?
A man can row at 6 kmph in still water. If the velocity of current is 3 kmph and it takes him 8 hour to row to a place and come back, how far is the place?
A man rows to a place 42 km away and comes back to the starting point. If the speed of the stream is 2 km/hr and the speed of the boat in still water is...
A man rows to a place 48 km distant and comes back in 14 hours. He finds that he can row 4 km with the stream at the same time as 3 km against the strea...
A boat covers 35 km downstream in 2 h and covers the same distance upstream in 7 h. Find the speed (in km/h) of the boat in still water.
A boat can go 15 km upstream and 21 km downstream in 2 hours. If the speed of the stream is 6km/h, then the time taken (in hours) by the boat to go 21 k...
A boat running downstream covers a distance of 36 km in 6 hrs and covering the same distance upstream in 9 hrs. What is the speed of a boat in still water?