Need help with this Math problem

Algebra
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Lamppost is 20ft tall. Mary is 5'3" tall. When she stands 10ft from the pole, her shadow is 21 ft. When Jane stands next to her, her shadow is 30 ft. How tall is Jane? What is the equation?

Oct 20th, 2015

Thank you for the opportunity to help you with your question!

the shadow / the height  of the two are equal, 

5'3"/21' = x/30'

x = 10/7*5'3" = 10/7*63" = 90"

=7'6"  

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 20th, 2015

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