Question
The ratio of the present ages of Ginni and Binni is 12:5
respectively. Ginni is ‘n’ years older than Binni. If after 6 years, the ratio of the ages of Binni to Ginni is 1:2, then find the value of √(n+4).Solution
Let the present ages of Ginni and Binni be 12x and 5x respectively. Here, n = 12x – 5x = 7x According to the question, => (12x + 6)/(5x + 6) = 2/1 => x = 3 Now, n = 7x = 21 Required value = √(n+4) = √(21+4) = √25 = 5
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