Start learning 50% faster. Sign in now
Let the total capacity of the tank be 100 units [L.C.M. of 20 and (100/3) ] So, the efficiency of tap 'A' = (100/20) = 5 units/minute Efficiency of tap 'A' with leakage = [100 ÷ (100/3) ] = 3 units/minute So, the efficiency of leakage = 5 - 3 = 2 units/minute Efficiency of tap 'B' = 5 X 0.8 = 4 units/minute So, effective efficiency of tap 'B' along with leakage = 4 - 2 = 2 units/minute Thererfore, required time = (100/2) = 50 minutes
A boat travels from point 'Y' to point 'Z' downstream and then returns to point 'X', which is located midway between 'Z' and 'Y'. The entire trip takes ...
A motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and a half an hour. If the speed of th...
Speed of boat is 20 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 72 km downstream?
A boat can cover 72 km upstream and 180 km downstream in 12 hours. Speed of the stream is how much less than the speed of the boat in still water if the...
A boat can cover 180 km in downstream in 18 hours and 125 km in upstream in 5 hours. Find the distance travelled by the boat in still water in 10 hours.
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?
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is ...
The circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii?
A boat can travel 36 km downstream in 40 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 4. How much time will t...
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 6:4:2, respectively. If ...