A 10 foot stick casts a shadow of 8 feet and a nearby tree casts a shadow of 82 feet. How tall is the tree?
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This is a proportional problem. A picture would probably have helped.
The ratio of the stick to its shadow is proportional to the ratio of the tree and its shadow.
10:8 is proportional to T:82
10/8=T/82
Some cross multiplication can help us here
8T=10*82
T=820/8
T=102½
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