Question : A tree of height 50 m was cut so that the height of the tree was reduced by 10%. Find the present height of the tree.
Option 1: 45 m
Option 2: 35 m
Option 3: 25 m
Option 4: 15 m
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Correct Answer: 45 m
Solution : Previous height of tree = 50 m Reduced by 10% Present height of the tree = 90% $\therefore$ Present height = $\frac{100-10}{100}\times$ previous height = $\frac{90}{100}\times50$ = 45 m Hence, the correct answer is 45 m.
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