document.write( "Question 979689: Sanjay is nine times the age of his son, Anand. In five years time he will be four time the age of Anand. How old are they now \n" ); document.write( "
Algebra.Com's Answer #601035 by ankor@dixie-net.com(22740)\"\" \"About 
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Let s = S's present age
\n" ); document.write( "let a = A's age
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\n" ); document.write( "Write an equation for each statement
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\n" ); document.write( " Sanjay is nine times the age of his son, Anand.
\n" ); document.write( "s = 9a
\n" ); document.write( " In five years time he will be four time the age of Anand.
\n" ); document.write( "s + 5 = 4(a + 5)
\n" ); document.write( "s + 5 = 4a + 20
\n" ); document.write( "s = 4a + 20 - 5
\n" ); document.write( "s = 4a + 15
\n" ); document.write( "replace s with 9a (from the 1st statement)
\n" ); document.write( "9a = 4a + 15
\n" ); document.write( "9a - 4a = 15
\n" ); document.write( "5a = 15
\n" ); document.write( "a = 15/5
\n" ); document.write( "a = 3 yrs is A's age
\n" ); document.write( "then
\n" ); document.write( "9(3) = 27 yrs is S's age
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\n" ); document.write( ":
\n" ); document.write( "See if this checks out in the statement
\n" ); document.write( "\" In five years time he will be four time the age of Anand.\"
\n" ); document.write( "27 + 5 = 4(3+5)
\n" ); document.write( "32 = 4(8)\r
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