A room is 3m longer than it is wide. If the area is 40 ... – Algebra

Algebrahard · Past Paper

A room is 3m longer than it is wide. If the area is 40 sq. m, find the width.

A5m

B8m

C4m

D10m

✓ Correct Answer: A — 5m

Let width = x, length = x+3. x(x+3) = 40 => x^2 + 3x - 40 = 0 => (x+8)(x-5)=0. Width = 5m.

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