exam Maths Puzzle Numerical Ability

The length of a rectangle is 2in. more than twice its width. If the perimeter of the rectangle is 52in., find the width of the rectangle.

I need help with this one please, thank you

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exam Other Question

An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
Can you help us write this equations? (x^3-1)/(x^2+1) divided by (9x^2+9x+9)/(x^2-x). THis problem is giving me a real hard time. I cannot seem to factor the 9x^2+9x+9 to anything less that 9(x^2+x+1) which does not cancel anything out. Am I doing something wrong?