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Ministry of Social Justice and Empowerment has initiated ambitious Nasha Mukt Bharat Abhiyaan (NMBA) currently operational in 372 districts of the country with an aim to create awareness about ill effects of substance abuse among the youth, with special focus on higher education institutes, university campuses, schools and reaching out into the community and garnering community involvement and ownership of the Abhiyaan.
A boat goes 52 km in upstream in 4 hours and takes 3 hours to complete a distance of 15 km in downstream. Find the speed of boat in still water.
A man can row at 3 kmph in still water. If the velocity of current is 2 kmph and it takes him 6 hour to row to a place and come back, how far is the place?