Question
A’s age is the sixth part of his father’s
age. After 10 years, the age of A’s father will be twice the age of B. If B’s 4th birthday is celebrated 3 years ago, then what is the current age of A?Solution
Let A’s age be x years and father’s age be 6x years. Present age of B = 4 + 3 = 7 years After 10 years, => 6x + 10 = 2(7 + 10) => 6x = 34 – 10 => x = 24/6 = 4 years
Find the average of first 12 whole numbers.
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