Question
The figure shows a rectangle GHJK. The lines are extended from point G, H, J and K and they meet at point M. The length of JK is 21 cm. Given that the area of triangle GMK is 72 cm2 and the area of triangle HMJ is 124 cm2, find the breadth of the rectangle in mixed number.
4 m

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The figure shows a rectangle GHJK. The lines are extended from point G, H, J and K and they meet at point M. The length of JK is 21 cm. Given that the area of triangle GMK is 72 cm2 and the area of triangle HMJ is 124 cm2, find the breadth of the rectangle in mixed number.