Question
The figure shows a rectangle JKLM. The lines are extended from point J, K, L and M and they meet at point P. The length of LM is 21 cm. Given that the area of triangle JPM is 57 cm2 and the area of triangle KPL is 144 cm2, find the breadth of the rectangle in mixed number.
4 m

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The figure shows a rectangle JKLM. The lines are extended from point J, K, L and M and they meet at point P. The length of LM is 21 cm. Given that the area of triangle JPM is 57 cm2 and the area of triangle KPL is 144 cm2, find the breadth of the rectangle in mixed number.