A Tree Is Standing Next To A 40 Foot High Building. The Tree Has An 18 Foot Shadow, While The Building Has A 16 Foot Shadow. How Tall Is The Tree, Rounded To The Nearest-foot?


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Call me Rae..? answered
Ok, this may be confusing, but this is how I would figure it out. First you determine that since the building is 40 ft tall, and the shadow, 16 ft, is 40% of the size of the building itself. (4 goes into 40 and 16 evenly, so    16/4=4   40/4=10   So 4/10=40%) So now we need to figure how tall the tree is. If 18 is only 40% of the size of the tree, then we do this: 18/4=4.5 (Because if the shadow=40%, we can reduce this and find out what 10% is equal to of the height of the tree, to make the process simpler) So now we have 10% of the tree, which is 4.5, and all we do is multiply(4.5) times 10 to equal 100% of the tree's height. 4.5x10=45.       The tree is 45 ft tall.

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