document.write( "Question 861722: Can someone help me solve this word problem \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "A cashier has a total of 89 bills, made up of tens and fifties. The total value of the money is $2850. How much of each kind does he have?
\n" ); document.write( "

Algebra.Com's Answer #519279 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
let x be tens and y be fifties, then
\n" ); document.write( "x + y = 89
\n" ); document.write( "10x + 50y = 2850
\n" ); document.write( "solve first equation for x
\n" ); document.write( "x = 89 - y
\n" ); document.write( "substitute for x in second equation
\n" ); document.write( "10(89-y) + 50y = 2850
\n" ); document.write( "890-10y +50y = 2850
\n" ); document.write( "40y = 1960
\n" ); document.write( "y = 49
\n" ); document.write( "substitute for y in first equation
\n" ); document.write( "x + 49 = 89
\n" ); document.write( "x = 40
\n" ); document.write( "there are 40 tens and 49 fifties
\n" ); document.write( "substitute in second equation to check answer
\n" ); document.write( "10(40) + 50(49) = 2850
\n" ); document.write( "400 + 2450 = 2850
\n" ); document.write( "2850 = 2850
\n" ); document.write( "our answer checks :-)\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );