If the ratio of time periods of investment of A and B is 5:7, profit at the end of the year is Rs.100000 and A’s share in it is Rs.20000, then what is the ratio of A’s and B’s investment?
Let the ratio of A’s and B’s investment be x:y. The ratio of time periods of investment of A, => [5x/(5x+7y)] x 100000 = 20000 => [5x/(5x+7y)] = 1/5 => 25x = 5x + 7y => 20x = 7y => x:y = 7:20
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If 20% of a = b and then b is:
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In a competitive examination containing 200 questions, 2 marks are awarded for every correct answer and 1 mark gets deducted for every wrong answer. If ...
