document.write( "Question 1041146: Ralph can lay down a floor tile in 5 seconds. Bob can lay down a floor tile in 4 seconds. If both boys work together, how many seconds would it take them to install 450 floor tiles? \n" ); document.write( "
Algebra.Com's Answer #656081 by MathTherapy(10555)\"\" \"About 
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\n" ); document.write( "Ralph can lay down a floor tile in 5 seconds. Bob can lay down a floor tile in 4 seconds. If both boys work together, how many seconds would it take them to install 450 floor tiles?
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Ralph takes 2,250 seconds, alone, while Bob takes 1,800 seconds, alone
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document.write( "Time both take, working together: \"highlight_green%28matrix%281%2C2%2C+%221%2C000%22%2C+seconds%29%29\" \n" );
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