Question
Three planks of different lengths, E, F and G are nailed together to make a frame as shown. Plank E has 3 holes which divide it into 4 equal parts. Plank F has 4 holes which divide it into 5 equal parts and Plank G has 5 holes which divide it into 6 equal parts. In the frame, the holes R, S and T are three corners of an equilateral triangle. Plank E is 288 cm long. What is the total length of Plank E, Plank F and Plank G?
3 m

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Three planks of different lengths, E, F and G are nailed together to make a frame as shown. Plank E has 3 holes which divide it into 4 equal parts. Plank F has 4 holes which divide it into 5 equal parts and Plank G has 5 holes which divide it into 6 equal parts. In the frame, the holes R, S and T are three corners of an equilateral triangle. Plank E is 288 cm long. What is the total length of Plank E, Plank F and Plank G?