Question
Three years ago, the ratio between the ages of 'A' and
'B' was 4:5, and eight years from now, the ratio will be 6:7. If 'C' is 12 years older than 'A', find the present age of 'C'.Solution
ATQ, Three years ago from now, let age of ‘A’ was ‘4y’ years So, age of ‘B’, three years ago was ‘5y' years ATQ; Eight years from now, ages will be 4y+11 for 'A' and 5y+11 for 'B'. Therefore, 
Present age of 'A' is 4y+3 =( 4×5.5) + 3 = 25 years. Therefore, the present age of 'C' is 25 + 12 = 37 years.
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