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Question id: 91. This question is similar to one that appeared in an IB Studies paper in 2014. The use of a calculator is allowed.

A red rug has a width of $$x-3$$ cm and a length of $$4x$$ cm.

(a) Write down an expression for the area, A, in cm2, of the rug.

The area of the rug is 3240 cm2.

(b) Calculate the value of $$x$$.

(c) Hence, write down the value of the length and of the width of the rug in centimetres.

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