Ratio of time taken by a sailor to cover some distance upstream and downstream is 4 : 1. If speed of stream is 4.5 km/hr. Then find out speed of boat? 

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is : 

A man rows to a place 35 km in distance and back in 10 hours 30 minutes. He found that he can row 5 km with the stream in the same time as he can row 4 km against the stream. Find the rate of flow of the stream? 

A man can row at a speed of $$4{1\over 2}$$km/hr in still water. If he takes 2 times as long to row a distance upstream as to row the same distance downstream, then the speed of stream (in km/hr) is : 

The speed of the motorboat in still water is 45 kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be: 

A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in $$6{1\over 2}$$ hours. The speed of the current is: 

Read the following passage and fill in each blank with words chosen from options given.

Uncertainty looms over the revival of Naini Lake, a waterbody in the middle of Model Town in North Delhi, due to __(157)__ in the opinions of residents and local bodies regarding its desilting and ______ (158). While the Corporation claimed that the lake _(159)_ for years and several attempts by them to initiate a drive to desilt it were halted because of lack of funds or __ (160)__ from locals, residents alleged that it is __ (161)___ fresh water lake and is free from silt, and only a water treatment plant will be enough to resolve the problem.

Select the most appropriate option to fill in the blank at 161.

Read the following passage and fill in each blank with words chosen from options given.

Uncertainty looms over the revival of Naini Lake, a waterbody in the middle of Model Town in North Delhi, due to __(157)__ in the opinions of residents and local bodies regarding its desilting and ______ (158). While the Corporation claimed that the lake _(159)_ for years and several attempts by them to initiate a drive to desilt it were halted because of lack of funds or __ (160)__ from locals, residents alleged that it is __ (161)___ fresh water lake and is free from silt, and only a water treatment plant will be enough to resolve the problem.

Select the most appropriate option to fill in the blank at 160.