Question
8 years ago, the ratio of the ages of Kim and Lee was
7:5. The present age of Ron is 15 years more than one-fourth of Lee’s present age. Find Ron's present age if Kim’s age in 4 years will be 40 years.Solution
Kim and Lee's ages 8 years ago = 7x and 5x Present ages = 7x + 8, 5x + 8 Kim's present age = 40 - 4 = 36 years → 7x = 36 - 8 = 28 → x = 4 Lee's present age = 5(4) + 8 = 28 Ron's present age = (1/4) * 28 + 15 = 22
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