Question
Numan does 4/ 5 half the work as Gagan in time. If
together they take 16 days to complete a piece of work, then how long will Gagan take to complete the work?Solution
AmanGagan Work-½1 1:2 Time4:5 Efficiency-¼2/5 5:8 Total efficiency =5+8=13 Total Work=16×13 Gagan takes time complete work = (16×13)/8 =26days
A man rows a boat a certain distance downstream in 9 hours, while it takes 18 hours to row the same distance upstream. How many hours will it take him t...
- The speed of boat ‘M’ in still water is double the speed of boat ‘N’. The two boats are 360 km apart on a river and move towards each other at the ...
- Ratio of speed of a boat in still water to speed of stream is 14:2 respectively.Ratio of the time taken by the boat to cover a distance of (x + 42) km upst...
Find the total distance covered by boat in each upstream and downstream in 5 hours if the speed of boat in still water and speed of current is 25 km/h a...
A man swims 2km/h against the stream and goes 1 km in 10 minutes along the stream, how much time will it take to cover 5 km in still water?
The speed of a boat in still water is 32km/hr and the speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B a...
A boat travels 36 km upstream and 48 km downstream in 8 hours. If the speed of the stream is 3 km/h and the boat’s speed in still water is 9 km/h, wha...
A car can cover a ‘2d’ km distance at the speed of ‘B’ km/h in 30 hours. The speed of the boat in still water and the speed of the stream are �...
A boat travels a certain distance downstream in 72 minutes but takes 3 hours to cover the same distance upstream. The speed of the stream is 15 km/h. If...
The speed of a boat in still water increases by 4 km/hour after each hour. The speed of stream is 3 km/hour. If the boat travelled 60 km in 3 hours in d...
Relevant for Exams:
