document.write( "Question 1149348: Josh is 36 years old. Josh was twice as old as Justin was when Josh was as old as Justin is now. How old is Justin now? \n" ); document.write( "
Algebra.Com's Answer #770691 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Josh is 36 years old. \n" ); document.write( " Josh was twice as old as Justin was when Josh was as old as Justin is now. \n" ); document.write( " How old is Justin now? \n" ); document.write( ": \n" ); document.write( "let j = Justin's present age \n" ); document.write( "let d = 36 - j, the difference in their ages \n" ); document.write( ": \n" ); document.write( "\"Josh was twice as old as Justin was when Josh was as old as Justin is now.\" \n" ); document.write( "36 - d = 2(j - d) \n" ); document.write( "36 - d = 2j - 2d \n" ); document.write( "36 = 2j - 2d + d \n" ); document.write( "36 = 2j - d \n" ); document.write( "replace d with 36 - j \n" ); document.write( "36 = 2j - (36 - j) \n" ); document.write( "36 = 2j - 36 + j \n" ); document.write( "36 + 36 = 2j + j \n" ); document.write( "72 = 3j \n" ); document.write( "j = 72/3 \n" ); document.write( "j = 24 yrs is Justin's age \n" ); document.write( " |