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Start learning 50% faster. Sign in nowTime taken by Nikhil to complete the whole work alone = 12/0.50 = 24 days Let the total work = 72 units Efficiency of (Akhil + Nikhil) = 72/9 = 8 units/day Efficiency of Nikhil = 72/24 = 3 units/day Efficiency of Akhil = 8 - 3 = 5 units/day Therefore efficiency of Sachin = 1.20 x 5 = 6 units/day Time taken by Sachin to complete the whole work alone = 72/6 = 12 days
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 925 km downstream is 18.5 hours. Find t...
A boy can swim a certain distance downstream in 4 hours and return in 7 hours. If the rate of stream is 6 kmph then what is the speed of boy in still wa...
A boat goes 52 km in Downstream in 4 hours and takes 5 hours to complete a distance of 15 km in upstream. Find the speed of boat in still water.
A man can row at 36 km/hr in still water. In a stream which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?
Speed of a boat in still water is 9 km/hr. It goes 12 km downstream and comes back to the starting point in three hours. What is the speed of water in t...
If a boat travels 35 km more in downstream than in upstream in 5 hr and if the speed of the boat in still water is 25 km/hr, then find the distance trav...
Speed of a boat in still water is 6 times more than the speed of stream. If boat covers 112 km in downstream in 8 hours, then find the time taken by the...
A boat travels faster than the stream by 28 km/h. It covers a distance of 112 km upstream and returns 132 km downstream, all within 7 hours. Calculate t...
A boy can swim in water with a speed of 10 km/hr in still water. If the speed of the stream is 4 km/hr, what will be the time taken by the boy to cover ...
