document.write( "Question 1134716: Twin​ brothers, Billy and​ Bobby, can mow their​ grandparent's lawn together in 99 minutes. Billy could mow the lawn by himself in 45 minutes less time that it would take Bobby. How long would it take Bobby to mow the lawn by​ himself? \n" ); document.write( "
Algebra.Com's Answer #752172 by josgarithmetic(39618)\"\" \"About 
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Bobby, \"1%2F%28L%2B45%29\"\r
\n" ); document.write( "\n" ); document.write( "Billy, \"1%2FL\"\r
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\n" ); document.write( "\n" ); document.write( "Bobby And Billy Together, \"1%2F%28L%2B45%29%2B1%2FL=1%2F99\";
\n" ); document.write( "Solve for L.\r
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\n" ); document.write( "How long would it take Bobby to mow the lawn by​ himself?
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\n" ); document.write( "\n" ); document.write( "Bobby, \"1%2FB\"\r
\n" ); document.write( "\n" ); document.write( "Billy, \"1%2F%28B-45%29\"\r
\n" ); document.write( "\n" ); document.write( "Both Together, \"1%2FB%2B1%2F%28B-45%29=1%2F99\"----solve for B.
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