document.write( "Question 1201373: Hi. How can I solve this? Thanks.
\n" ); document.write( "Both Mr Gan and Mr Koon received a salary every month. Last month, Mr Gan's salary was 9/10 of Mr Koon's salary. This month, Mr Gan's salary decreased by $220 while Mr Koon's salary increased by $200. In the end, Mr Gan's salary was 7/10 of Mr Koon's salary. What was Mr Gan's salary last month? \n" ); document.write( "

Algebra.Com's Answer #835871 by MathTherapy(10552) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "Hi. How can I solve this? Thanks.\r\n" );
document.write( "Both Mr Gan and Mr Koon received a salary every month. Last month, Mr Gan's salary was 9/10 of Mr Koon's salary. This month, Mr Gan's salary decreased by $220 while Mr Koon's salary increased by $200. In the end, Mr Gan's salary was 7/10 of Mr Koon's salary. What was Mr Gan's salary last month?\r\n" );
document.write( "\r\n" );
document.write( "Let Gan's salary, last month, be G\r\n" );
document.write( "Since last month, Mr Gan's salary was  of Mr Koon's salary, Mr. Koon's salary, last month, was \r\n" );
document.write( "With Gan's salary decreasing by $220, Gan's salary, this month, is G - 220.\r\n" );
document.write( "With Koon's salary increasing by $200, Koon's salary, this month = \r\n" );
document.write( "\r\n" );
document.write( "As Gan's salary, this month, was  of Koon's, this month, we get:  \r\n" );
document.write( "                                                                 9(G - 220) = 7G + 140(9) ------ Cross-multiplying\r\n" );
document.write( "                                                                9G - 220(9) = 7G + 140(9)\r\n" );
document.write( "                                                                    9G - 7G = 140(9) + 220(9)\r\n" );
document.write( "                                                                         2G = (140 + 220)(9)\r\n" );
document.write( "                                                                         2G = 360(9)\r\n" );
document.write( "                                 Mr. Gan's salary, last month, or

\n" ); document.write( "

\n" );