Height and Growth
Logic
Level
2
When Sam was at the age of 8 years, he hammered a nail into a large tree to mark his height. If the tree grows 2 cm/year, how much higher would the nail be after 5 years?
5 cm higher
8 cm higher
0 cm higher
10 cm higher
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1 solution
How much high the tree goes it doesn't matter. Let us assume that the initial position is at x . After 5 years the tree will grow 2 × 5 = 1 0 c m that means the whole tree grows 10 cm and not only it's bark. So after 5 years also the position of x will not change with respect to tree.