Question
The average height of a coconut tree, a durian tree and a starfruit tree is 8.8 m. The starfruit tree is four times as tall as the durian tree and 0.6 m taller than the coconut tree. Find the average height of the coconut tree and the durian tree.
2 m

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The average height of a coconut tree, a durian tree and a starfruit tree is 8.8 m. The starfruit tree is four times as tall as the durian tree and 0.6 m taller than the coconut tree. Find the average height of the coconut tree and the durian tree.