document.write( "Question 66923: A cashier saves 1/5 of her gross monthly salary. This is $40 more than is saved by her friend that is a secretary whose salary is $200 greater. If the secretary save 1/7 of her salary. How much does each earn per month? \n" ); document.write( "
Algebra.Com's Answer #47664 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A cashier saves 1/5 of her gross monthly salary. This is $40 more than is saved by her friend that is a secretary whose salary is $200 greater. If the secretary save 1/7 of her salary. How much does each earn per month? \n" ); document.write( ": \n" ); document.write( "Let x = cashier's salary \n" ); document.write( "Secretary earns $200 more so we can say her salary = (x+200) \n" ); document.write( ": \n" ); document.write( "Write an expression for each given statement: \n" ); document.write( ": \n" ); document.write( "\"A cashier saves 1/5 of her gross monthly salary.\" \n" ); document.write( "(1/5)x \n" ); document.write( ": \n" ); document.write( "\"the secretary save 1/7 of her salary.\" \n" ); document.write( "(1/7)(x+200) \n" ); document.write( ": \n" ); document.write( "\"This is $40 more than is saved by her friend that is a secretary\" \n" ); document.write( ": \n" ); document.write( "Cashier's saving = Secretary's savings + $40 \n" ); document.write( "(1/5)x = (1/7)(x+200) + 40 \n" ); document.write( ": \n" ); document.write( "Multiply thru by 35 to get rid of the denominators, resulting in: \n" ); document.write( "7x = 5(x+200) + 35(40) \n" ); document.write( "7x = 5x + 1000 + 1400 \n" ); document.write( "7x - 5x = 2400 \n" ); document.write( "2x = 2400 \n" ); document.write( "x = 2400/2 \n" ); document.write( "x = $1200 is the cashier's salary, obviously $1400 is the secretary's salary \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "We can check this easily \n" ); document.write( "(1/5)1200 = 240 \n" ); document.write( "(1/7)1400 = 200 \n" ); document.write( "--------------- \n" ); document.write( "difference: 40 \n" ); document.write( " |