book Maths Puzzle Numerical Ability

Ali is 30 years younger than his father.if thier cobnied age is 80 years.how old is each person.

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book Other Question

how do i compute the square root of a real number,so that i can use the formula in a programming language? Rian is 4 years older than Christian. Twelve years ago Rian was two times as old as Christian. Find their present ages.