InterviewSolution
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InterviewSolution
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Two years ago, Ritu was three times as old as her daughter and two years hence, twice her age will be equal to five times that of her daughter. What is the sum of the present ages of Ritu and her daughter? |
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Answer» suppose Ritu's age is R and her daughter's age is D R - 2 = 3(D - 2) R - 2 = 3D - 6 R = 3D - 4 2(R + 2) = 5(D + 2) 2R + 4 = 5D + 10 2R = 5D + 6 2(3D - 4) = 5D + 6 6D - 8 = 5D + 6 D = 14 R = 3*14-4 = 42-4 = 38 R + D = 38 + 14 = 52 |
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