book Maths Puzzle Numerical Ability

A strip of wood 66 inches long is to be cut into 5 1/2-inch pieces. How many pieces can be cut?

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I'm hoping to find the name of a particular graph. The function is f(x)=1/(x^2)+1... Could someone help? I need it within the next few minutes, if possible. Thanks in advanced for solve beware of extraneois solutions 10/(x(x-2)) + 4/x = 5/(x-2)