- Calculate the sum of ages in the past based on the sum of present ages and the time difference. - Represent the ages in the past using the given ratio and a variable ($x$). - Set up an equation using the sum of ages in the past to find the value of the variable. - Calculate the individual ages in the past and then find the present ages by adding the time difference.
√730 is very close to √729 = 27. Using these approximations, the expression is approximately 15² × 27 = 225 × 27. 182. The sum of the present ages of A, B and C is 180 years. 12 years ago their ages were in the ratio of 1:2:3. What is the present age of C?
Asked in GPSC Prelims CSP 1 2018 · Topic: Planning (Sectoral Planning (Agriculture, Industry, Infrastructure, Social Sector))
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