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P’s one day’s work = 1/48days Q’s one day’s work = 1/60days R’s one day’s work = 1/80days Then, (x -12)/48 + (x - 16)/60 + (x )/80 = 1 (5(x-12)+4(x-16)+3x)/240 = 1 5x – 60 + 4x – 64 + 3x = 240 12x = 240 + 124 12x = 364 x = 364/12 x=91/3 ∴x = 30(1/3) days
Two boats X and Y start towards each other from two places, 155 km apart. Speed of the boat X and Y in still water are 14 km/hr and 17 km/hr respectivel...
A boat takes 4 hours to travel 48 km downstream and 6 hours to travel 24 km upstream. What is the speed of the boat in still water?
The downstream speed of a boat is 4 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
A steam train covers a certain distance at the same speed. If the steam train had been faster by 8 kilometers per hour, it would have taken 16 hours les...
The speed of the stream is 14 km/h. Boat ‘A’ covers 130 km distance against the stream in 5 hours and boat ‘B’ covers 100 km distance against th...
The speed of a boat in downstream is 20% more than speed of boat in still water. If the boat travels a distance of 90 km upstream in 15 hours then find...
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,...
The speed of current is 8 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if one fifth of the distance cov...
When travelling downstream, a boat takes 6.25 hours to travel 225 km. If the speed of the stream is (1/3)rd of downstream speed of the boat, ...
The speed of a boat in still water is 8 km/hr and speed of current is 4 km/hr. If time taken to cover a certain distance upstream is 12 hours, then how ...