document.write( "Question 522747: Dear Tutor,\r
\n" ); document.write( "\n" ); document.write( "I am having a hard time trying to work out this problem. Would you please be so kind as to try and help me.\r
\n" ); document.write( "\n" ); document.write( "This is the question:
\n" ); document.write( "John is 3 times younger than his dad's age. The sum of their ages is 79. Find Johns age as a fraction.\r
\n" ); document.write( "\n" ); document.write( "I tied by saying 79 divide by 3 and got 26 and a third but I would like to know for sure.\r
\n" ); document.write( "\n" ); document.write( "Thank you for taking the time to help me\r
\n" ); document.write( "\n" ); document.write( "kind regards
\n" ); document.write( "Tracey
\n" ); document.write( "

Algebra.Com's Answer #347091 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
I would do it this way
\n" ); document.write( ":
\n" ); document.write( "John is 3 times younger than his dad's age.
\n" ); document.write( "d = 3j
\n" ); document.write( "but they want John's age as a fraction, divide both sides by 3
\n" ); document.write( "j = \"1%2F3\"d
\n" ); document.write( ":
\n" ); document.write( "The sum of their ages is 79.
\n" ); document.write( "d + j = 79
\n" ); document.write( ":
\n" ); document.write( "replace j with \"1%2F3\"d
\n" ); document.write( "1d + \"1%2F3\"d = 79
\n" ); document.write( ":
\n" ); document.write( "1 1/3 = 4/3, so write it
\n" ); document.write( "\"4%2F3\"d = 79
\n" ); document.write( ":
\n" ); document.write( "multiply both sides by 3, to get rid of the denominators
\n" ); document.write( "4d = 3(79)
\n" ); document.write( "4d = 237
\n" ); document.write( "d = 237/4
\n" ); document.write( "d = 59.25 is Dad's age
\n" ); document.write( "then
\n" ); document.write( "j = \"1%2F3\"59.25
\n" ); document.write( "j = 19.75 or 19\"3%2F4\" yr is John's age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this by finding the sum of their ages
\n" ); document.write( "59.25
\n" ); document.write( "19.75
\n" ); document.write( "-----
\n" ); document.write( "79.00
\n" ); document.write( "
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