book Maths Puzzle Numerical Ability

the lenght of a picture frame is 3 in. greater than the width. the perimeter is less than 52 in.Describe the dimensions of the frame.

please help me out and thank you....

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book Other Question
How many different arrangements of the letters of the word "doodle" are possible?

Thank You Write this expression in simplest form.

4r^2 - 25s^2/2r^2 + 3rs - 20s^2

Thanks!