document.write( "Question 542435: solve this proportion: a rainstorm produced a rainfall of 2 inches per hour. How many hours would it take to get a rainfall amount of one foot. \n" ); document.write( "
Algebra.Com's Answer #354567 by neatmath(302)\"\" \"About 
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Given:
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\n" ); document.write( "\n" ); document.write( "2 inches per hour
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\n" ); document.write( "\n" ); document.write( "Want:
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\n" ); document.write( "\n" ); document.write( "1 foot per x hours
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\n" ); document.write( "\n" ); document.write( "Let's change the foot into inches to make it easier. Then we want
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\n" ); document.write( "\n" ); document.write( "12 inches per x hours
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\n" ); document.write( "\n" ); document.write( "From this it is fairly straightforward to see that it would need to rain for 6 hours to accumulate 12 inches of rain.
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\n" ); document.write( "\n" ); document.write( "But we can also set it up as a proportion. In other words:
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\n" ); document.write( "\n" ); document.write( "2 inches is to 1 hour as 12 inches is to x hours?
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\n" ); document.write( "\n" ); document.write( "\"2%2F1=12%2Fx\"
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\n" ); document.write( "\n" ); document.write( "Then we just need to cross multiply and solve for x:
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\n" ); document.write( "\n" ); document.write( "\"2%2Ax=1%2A12\"
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\n" ); document.write( "\n" ); document.write( "\"2x=12\"
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\n" ); document.write( "\n" ); document.write( "\"x=6\"
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\n" ); document.write( "\n" ); document.write( "So again, it would take 6 hours to have one foot (or 12 inches) of rainfall.
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\n" ); document.write( "\n" ); document.write( "I hope this helps!
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