Question
The average height of a chikoo tree, a persimmon tree and a guava tree is 8.4 m. The guava tree is four times as tall as the persimmon tree and 1.8 m taller than the chikoo tree. Find the average height of the chikoo tree and the persimmon tree.
2 m

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The average height of a chikoo tree, a persimmon tree and a guava tree is 8.4 m. The guava tree is four times as tall as the persimmon tree and 1.8 m taller than the chikoo tree. Find the average height of the chikoo tree and the persimmon tree.