document.write( "Question 497237: 5 years ago Jane was 5 times as old as her son. 5 years hence her age will be 8 less than 3 times the corresponding age of her son.Find their ages \n" ); document.write( "
Algebra.Com's Answer #336819 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! let j = J's present age \n" ); document.write( "Let s = son's present age \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement, simplify each equation: \n" ); document.write( ": \n" ); document.write( "\"5 years ago Jane was 5 times as old as her son.\" \n" ); document.write( "j - 5 = 5(s-5) \n" ); document.write( "j - 5 = 5s - 25 \n" ); document.write( "j = 5s - 25 + 5 \n" ); document.write( "j = 5s - 20 \n" ); document.write( ": \n" ); document.write( "\"5 years hence her age will be 8 less than 3 times the corresponding age of her son.\" \n" ); document.write( "j + 5 = 3(s+5) - 8 \n" ); document.write( "j + 5 = 3s + 15 - 8 \n" ); document.write( "j + 5 = 3s + 7 \n" ); document.write( "j = 3s + 7 - 5 \n" ); document.write( "j = 3s + 2 \n" ); document.write( ": \n" ); document.write( "From the 1st simplified equation, replace j with (5s-20) in the above eq \n" ); document.write( "5s - 20 = 3s + 2 \n" ); document.write( "5s - 3s = 2 + 20 \n" ); document.write( "2s = 22 \n" ); document.write( "s = 22/2 \n" ); document.write( "s = 11 yrs is the son's present age \n" ); document.write( ": \n" ); document.write( "Find J's age \n" ); document.write( "j = 3(11) + 2 \n" ); document.write( "j = 33 + 2 \n" ); document.write( "j = 35 is Jane's present age \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Confirm this using the 1st statement: \n" ); document.write( "\"5 years ago Jane was 5 times as old as her son. \" \n" ); document.write( "35 - 5 = 5(11 - 5) \n" ); document.write( "30 = 5(6) \n" ); document.write( " |