Question
Three planks of different lengths, N, P and Q are nailed together to make a frame as shown. Plank N has 3 holes which divide it into 4 equal parts. Plank P has 4 holes which divide it into 5 equal parts and Plank Q has 5 holes which divide it into 6 equal parts. In the frame, the holes H, J and K are three corners of an equilateral triangle. Plank N is 264 cm long. What is the total length of Plank N, Plank P and Plank Q?
3 m

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Three planks of different lengths, N, P and Q are nailed together to make a frame as shown. Plank N has 3 holes which divide it into 4 equal parts. Plank P has 4 holes which divide it into 5 equal parts and Plank Q has 5 holes which divide it into 6 equal parts. In the frame, the holes H, J and K are three corners of an equilateral triangle. Plank N is 264 cm long. What is the total length of Plank N, Plank P and Plank Q?