document.write( "Question 720892: If the sum of the ages of Peter and Silvester now is 43 years and after 5 years, the difference between both ages will be 3 years.
\n" ); document.write( "Find the age of each of them after 7 years. \n" ); document.write( "
Algebra.Com's Answer #442097 by ankor@dixie-net.com(22740)\"\" \"About 
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If the sum of the ages of Peter and Silvester now is 43 years
\n" ); document.write( " and after 5 years, the difference between both ages will be 3 years.
\n" ); document.write( "Find the age of each of them after 7 years.
\n" ); document.write( ":
\n" ); document.write( "p = P's present age
\n" ); document.write( "s = S's present age
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\n" ); document.write( "Write an equation for each statement
\n" ); document.write( ":
\n" ); document.write( "\" If the sum of the ages of Peter and Silvester now is 43 years\"
\n" ); document.write( "p + s = 43
\n" ); document.write( ":
\n" ); document.write( "\"after 5 years, the difference between both ages will be 3 years.\"
\n" ); document.write( "This is kind of ridiculous, if they are 3 yr apart now they will be 3 yrs apart forever. Anyway plunging ahead with an equation
\n" ); document.write( "(p+5) - (s+5) = 3
\n" ); document.write( "p - s + 5 - 5 = 3
\n" ); document.write( "p - s = 3, like we said
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\n" ); document.write( "Solve using elimination
\n" ); document.write( "p + s = 43
\n" ); document.write( "p - s = 3
\n" ); document.write( "------------adding eliminates s, find p
\n" ); document.write( "2p = 46
\n" ); document.write( "p = 46/2
\n" ); document.write( "p = 23 yrs is age, I'll let you find S's present age
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\n" ); document.write( "Find the age of each of them after 7 years.
\n" ); document.write( "You should be able to find this too. \n" ); document.write( "
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