Question
The speed of the boat A and B in still water are in the
ratio 15:13. The speed of the current for both boats is 16 km/hr. If the sum of time taken by boat A in downstream to travel 184 km and time taken by boat B to travel 40 km in upstream is 8 hours. Find the difference between the speed of boat A in upstream and B in downstream.Solution
Let the speed of the boats ‘A and ‘B’ in still water be ‘15x’ km/hr and ‘13x’ km/hr, repectively Speed of boat ‘A’ in downstream = (15x+16) km/hr Speed of boat ‘B’ in upstream = (13x-16) km/hr According to the question, 
(2444x – 3008) + (600x+640) = 8*(195x2 –32x-256) 3004x-2368 = 1560x2 –256x-2048 1560x2 – 3260x + 320 = 0 78x2 – 163x + 16 = 0 X= 1.98 or 0.10 X= 2 approx. Speed of the boat A and B in still water is 30km/hr and 26 km/hr . Speed of boat A in upstream = 30-16 = 14 km/hr Speed of the boat B in downstream = 26+16 = 42 km/hr Required sum = 14km/hr +42 km/hr = 56 km/hr.
The edible part of Knol Khol is:
In the context of irrigation scheduling, what does the “IW/CPE ratio” represent?
Major groundnut producing state in India is:
Growing different crops in association with each other on the same field at the same time is called ________cropping.
Which one of the following is an area of a crop commanded by one cusec flow in a season?
Dry seeding in dryland crop is recommended for__ crops
Given below are wo statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The probe of a neutron moisture ...
In groundnut, IW/CPE ratio of ___ is ideal throughout reproductive period
Which process is used to make the harvested tobacco leaf ready for the market?
Single superphosphate contains:
