Homework Help: math

Posted by n on Friday, February 24, 2012 at 11:19am.

what is the process for solving the following question?

John is 72 inches tall and casts a 40 inch shadow.
A monument casts a 24 foot shadow. How tall is the monument?

math - Damon, Friday, February 24, 2012 at 11:23am
72/40 =h/24
so
h = 24 (72/40) feet
math - Ms. Sue, Friday, February 24, 2012 at 11:23am
Change the inches to feet.

72 inches = 6 feet
40 inches = 3.333 feet

Set up a proportion and cross multiply.

6/3.333 = x/24
math - n, Friday, February 24, 2012 at 11:24am
Thank you so much!
math - Damon, Friday, February 24, 2012 at 11:32am
LOL
72/40 = 6/3.3333....
math - Damon, Friday, February 24, 2012 at 11:35am
Ratio of height to shadow length could be in shoelace lengths as long as the same shoelace is used top and bottom.

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