Question
A girl’s age is 155% of what it was 10 years ago, but 55% of what it will be after 10 years. What is her present age?
Solution
Let the girl's present age be 'x' years. According to question, => 1.55 × (x-10) = 0.55 × (x+10) => 1.55x – 15.5 = 0.55x + 5.5 => x = 21 years
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