document.write( "Question 1099742: Fran Thompson can wash windows in the lobby at the Days Inn in 3 hours. Jill Franks can wash the same windows in 4.5 hours. How long will it take them working together to wash the windows?
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Algebra.Com's Answer #714218 by Alan3354(69443)\"\" \"About 
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Fran Thompson can wash windows in the lobby at the Days Inn in 3 hours. Jill Franks can wash the same windows in 4.5 hours. How long will it take them working together to wash the windows?
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\n" ); document.write( "3*4.5/(3+4.5) = 1.8 hours
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