book Maths Puzzle Numerical Ability

can you please help me
solve the equation logb9 = 2

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book Other Question

A picture frame is 5 inches wider than it is high. If the height and the width are both increased by 3, the area is increased by 54 in2. Find the height and width of the picture frame. The height goes in the first box, and the width into the second box. What is the percentage of 272.81?