Question
The ratio of the present ages of Ginni and Binni is 8:5
respectively. Ginni is ‘n’ years older than Binni. If after 5 years, the ratio of the ages of Binni to Ginni is 2:3, then find the value of √(n+1).Solution
Let the present ages of Ginni and Binni be 8x and 5x respectively. Here, n = 8x – 5x = 3x According to the question, => (8x + 5)/(5x + 5) = 3/2 => x = 5 Now, n = 3x = 15 Required value = √(n+1) = √(15+1) = √16 = 4
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