When a firm operates with excess capacity
Additional production lowers the average total cost when firm operates with excess capacity. 
A man can row 32 km/hr in still water. It takes him thrice as long to row up as to row down the river. Find the rate of the current.
A man rows to a place 24 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...
Ramesh rows in still water at the speed of 8 kmph to go a certain place and come back. Find his average speed for the whole journey if the river is flow...
Speed of a boat in still water to speed of boat in upstream is 9:5. If the boat can travel 390 km in downstream in 5 hours, then find the time taken by ...
A man can row at a speed of 20 km/hr in still water to a certain upstream point and back to the starting point in a river which flows at 5 km/hr. Find h...
A boy can swim in water with a speed of 16 km/hr in still water. If the speed of the stream is 9 km/hr, what will be the time taken by the boy to cover ...
When travelling downstream, a boat takes 6.25 hours to travel 275 km. If the speed of the stream is (4/11)th of downstream speed of the boat,...
Speed of a boat in still water is 10 kmph and speed of stream is 6 kmph. A man rows to a place at a distance of 32 km and come back to starting point. T...
A boat covers some distance downstream in 1 hour. It covers 3/2 hours. If the velocity of the stream is 3 kilometers per hour, then what will be the vel...
The speed of a motorboat in still water is 50 km/hr. If the motorboat travels 120 km along the stream in 1 hour 30 minutes, then the time taken by it t...
