exam Maths Puzzle Numerical Ability

The price of a container of fuel oil 7 years ago was $120. Today, the same container costs $150. What was the annual rate of appreciation in the cost of the oil to the nearest tent

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(4th root of 8p^2q^5)(4th root of 2p^3q)/4th root of p^5q^2 The length of a rectangle is 2 in. more than twice its width. If the perimeter of the rectangle is 52 in., find the width of the rectangle.