book Maths Puzzle Numerical Ability

How do I set up the equation to solve this problem? In 19854 Barry was 13 and his dad 43. In what year will Barry's age be 2/5's of his dads?

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The measure of the area of a rectangle is 6a^2+7a+2. The width is a binomial of the form ap+q. What is the measure of the perimeter of the rectangle? 3w =w.3