document.write( "Question 541266: Roger, Sue, and Tim have $155 among them. Roger has $5 more than Sue and Tim together. If Sue gives Time $5 he will have twice as much as she does. How much does each have? \n" ); document.write( "
Algebra.Com's Answer #354823 by jpg7n16(66)![]() ![]() ![]() You can put this solution on YOUR website! Here you are solving for 3 different variables. I'd suggest solving for 1 variable and substituting back in to the problem. Let's start with turning the words into equations: \n" ); document.write( ". \n" ); document.write( "\"Roger, Sue, and Tim have $155 among them.\" \n" ); document.write( "1) \n" ); document.write( "\"Roger has $5 more than Sue and Tim together.\" \n" ); document.write( "2) \n" ); document.write( "\"If Sue gives Time $5 he will have twice as much as she does.\" \n" ); document.write( "3) \n" ); document.write( "\"How much does each have?\" \n" ); document.write( "Now it's time to solve. \n" ); document.write( ". \n" ); document.write( "The way to substitute, is to say either r= or s= or t= something, and replace a variable with that \"something\" in another problem. Fortunately, equation 2 already has \n" ); document.write( "1) \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "And we can't really reduce further. \n" ); document.write( ". \n" ); document.write( "Let's also make #3 easier to read. \n" ); document.write( "3) \n" ); document.write( " \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Now we know what T \"equals\" so we can plug that into our simplifed #1 and solve for S. \n" ); document.write( "1) \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Now that we know what S equals, we can easily solve for R and T. Plug 30 in for S in the following equation. \n" ); document.write( "3) \n" ); document.write( "Once you figure out what T is, you can solve \n" ); document.write( "2) \n" ); document.write( "and you can check your answer with \n" ); document.write( "1) \n" ); document.write( "Hope this helps! \n" ); document.write( " |