Posted by **becca** on Monday, May 17, 2010 at 4:18pm.

bryan berg built an 83-story house of cards in 1995. he used 27,000 playing cards to accomplish this feat. at this same rate, about how many cards would it take to build a 100-story house of cards?

- 9th grade -
**Ms. Sue**, Monday, May 17, 2010 at 4:24pm
Let's set up a proportion and let x = the number of cards need for a 100-story house.

83/27,000 = 100/x

Cross multiply:

83x = 2,700,000

x = 32,530.1205 = 32,531

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