A’s age is the fifth part of his father’s age. After 7 years, the age of A’s father will be twice the age of B. If B’s 6th birthday is celebrated 3 years ago, then what is the current age of A?
Let A’s age be x years and father’s age be 5x years. Present age of B = 6 + 3 = 9 years After 7 years, => 5x + 7 = 2(9 + 7) => 5x = 32 – 7 => x = 25/5 = 5 years
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