document.write( "Question 709293: Each year, every member of a club pays an equal amount to raise $63.00 for supplies. this year, there is one more person in the club than there was last year. Each member pays $0.70 less than they did last year. What did each member have to pay last year?
\n" ); document.write( "I know X is member that paid last year
\n" ); document.write( "X+1 is member who paid this year
\n" ); document.write( "Y is the money from last year
\n" ); document.write( "Y-.70 is what members paid this year.
\n" ); document.write( "I don't know how to set it up, or solve it \n" ); document.write( "

Algebra.Com's Answer #436539 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
Each year, every member of a club pays an equal amount to raise $63.00 for supplies.
\n" ); document.write( " this year, there is one more person in the club than there was last year.
\n" ); document.write( " Each member pays $0.70 less than they did last year. What did each member have to pay last year?
\n" ); document.write( ":
\n" ); document.write( " $\"63%2Fx\"$ - $\"63%2F%28%28x%2B1%29%29\"$ = .70
\n" ); document.write( "multiply by x(x+1), cancel the denominators and you have:
\n" ); document.write( "63(x+1) - 63x =.7x(x+1)
\n" ); document.write( "63x + 63 - 63x = .7x^2 + .7x
\n" ); document.write( "Arrange as a quadratic equation on the right
\n" ); document.write( "0 = .7x^2 + .7x - 63
\n" ); document.write( "divide equation by .7, this gives us some whole numbers to deal with, results:
\n" ); document.write( "x^2 + x - 90 = 0
\n" ); document.write( "Factors easily to
\n" ); document.write( "(x+10)(x-9) = 0
\n" ); document.write( "the positive solution
\n" ); document.write( "x = 9 members last year
\n" ); document.write( ":
\n" ); document.write( "\"What did each member have to pay last year?\" You can do that, I'm sure \n" ); document.write( "

\n" );