Question
A man rows a certain distance downstream in 5 hours and
back to the same point in 8 hours. If the speed of the stream is 4.5 km/hr then what is the speed of the man in still water?Solution
Let the speed of the man in still water be x km/hr. Downstream speed = (x+ 4.5) km/hr. Upstream speed = (x- 4.5) km/hr. (x+ 4.5) × 5 = (x- 4.5) × 8 5 x + 22.5 = 8 x - 36 3 x = 58.5 ∴ x = 19.5 km/hr.
Field medal is related to which of the following field?
Which part of the Indian Constitution is related to special provisions given to the states?
Who among the following has the power to remove the Chairperson or any other Member of a National Human Rights Commission?
What is the primary goal of the "Drone Didi" initiative by the Indian government?
In the month of March, 2022 who has been appointed as the member of SEBI (Securities and Exchange Board of India)?
Name the famous Indian painter who was honoured with the Kaisar-i-Hind Gold Medal by the British Viceroy of India, Lord Curzon?
According to the annual report on Vital Statistics based on 2020 Civil Registration System report, __________ recorded the highest sex ratio at birth in...
Which institution was established in 2015, in the place of Planning commission of India?
In India, the population Census is under which list of schedules of Indian constitution?
Which of the following is a Palaeolithic site of archaeological importance in India?
Relevant for Exams:
