Question
A man can row 8 km/hr in still water. If the speed of
the current is 2 km/hr, it takes 5 hours more in upstream than in the downstream for the same distance. Find the distance.Solution
Speed of man in still water = x = 8 km/hr Speed of current = y = 2 km/hr Let the distance be x km. Now according to the question, Upstream time = Downstream time + 5 => x/(8-2) – x/(8+2) = 5 => x/6 – x/10 = 5 => [(5x - 3x)/30] = 5 => x = 75 km
Which one of the following is a competitive market?
Which type of irrigation method is considered most efficient in terms of water use and is particularly suitable for high-value horticultural crops like ...
Example of audio visual aid is
Which of the following is main objective of puddling in paddy?
Which cereal crop is most tolerant to saline and alkali soils
The Gurgaon Project aimed at improving agriculture, education, health and sanitation facilities, co-operation, and social development with greater vigor...
Visual aid of communication includes which of the following?
Inbreeding or consanguineous mating is mating between individuals related by ………………..
Which of these green house gas is most abundant in the atmosphere?
Which of the cultural operations is specially followed in Chickpea ?
Relevant for Exams:
