document.write( "Question 1148121: The ratio of David's age to Sally's age is 3 : 4.
\n" ); document.write( "
\n" ); document.write( "In six years' time it will be 4 : 5.\r
\n" ); document.write( "\n" ); document.write( "Complete the sentence by filling in the gaps.
\n" ); document.write( "

Algebra.Com's Answer #769492 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Sentence with gaps not shown.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "d David
\n" ); document.write( "x Sally\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"system%28d%2Fx=3%2F4%2C%28d%2B6%29%2F%28x%2B6%29=4%2F5%29\"
\n" ); document.write( "You can simplify the system and solve for x and d.
\n" ); document.write( "
\n" );