Question
The figure shows the Triangle ZAB that is divided into 4 parts j, k, m and n. The line ZC divides the triangle into 2 equal parts. The ratio of Area j to Area k is 1 : 3 and the ratio of Area k to Area m is 5 : 2. Area n is 315 m2. What is the area of Triangle ZAB?
3 m

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The figure shows the Triangle ZAB that is divided into 4 parts j, k, m and n. The line ZC divides the triangle into 2 equal parts. The ratio of Area j to Area k is 1 : 3 and the ratio of Area k to Area m is 5 : 2. Area n is 315 m2. What is the area of Triangle ZAB?