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The Best Christmas Present In The World Detailed Explanation Part 1

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A factory makes tennis rackets and cricket bats. A tennis racket takes 1. 5 hours of machine time and 3 hours of craftmans time in its making while a cricket bat takes 3 hours of machine time and 1 hour of craftmans time. In a day, the factory has the availability of not more than 42 hours of machine time and 24 hours of craftsmans time. If the profit on a racket and on a bat is Rs. 20 and Rs. 10 respectively, find the number of tennis rackets and crickets bats that the factory must manufacture to earn the maximum profit. Make it as an L.P.P. and solve graphically.

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The best method to separate a mixture of ortho and para nitrophenol (1 : 1) is :

The best method to separate the mixture of ortho and para nitrophenol (1:1) is

200 is divided into two parts in such a way that the sixth part of first and the half part of second are in the ratio 1 : 1 what will be the value of second part?