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Posted by on Wednesday, April 13, 2011 at 4:17pm.

On a sunny day, a tree casts a shadow 60 feet long. At the same time, a yardstick casts a shadow 2 feet long. How tall it the tree??

  • Proportions - , Wednesday, April 13, 2011 at 4:25pm

    Cross-multiply:

    Height : shadow
    H : 60'
    3' : 2'
    H=3'*60'/2'= 90'

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