The length of a tree increased by 20%every year .If the present length of the tree of the tree is 28.8m. What was the length of the tree 3 years before?
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Answer:
height increase=20% per year
present height=28.8m
3 year ago height= 20%+20%+20%=60%
=60%of 28.8
=60/100*28.8
=17.28
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