document.write( "Question 157674: 1. The sum of two numbers is 24. One number is one third of the other. Find the number.\r
\n" ); document.write( "\n" ); document.write( "2. The length of a rectangle is 6m longer than its breadth. If the length and breadth are of the ratio 6:5, find the number.\r
\n" ); document.write( "\n" ); document.write( "3. A father is older than his son by 32 years. 6 years ago the father was 17 times as lod as his son. How old are they now.
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Algebra.Com's Answer #116170 by josmiceli(19441)\"\" \"About 
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Call the numbers \"a\" and \"b\"
\n" ); document.write( "(1) \"a+%2B+b+=+24\"
\n" ); document.write( "(2) \"a+=+%281%2F3%29b\"
\n" ); document.write( "--------------------
\n" ); document.write( "From (1)
\n" ); document.write( "\"b+=+24+-+a\"
\n" ); document.write( "substituting in (2)
\n" ); document.write( "\"a+=+%281%2F3%29%2A%2824+-+a%29\"
\n" ); document.write( "\"a+=+8+-+%281%2F3%29a\"
\n" ); document.write( "Multiply both sides by \"3\"
\n" ); document.write( "\"3a+=+24+-+a\"
\n" ); document.write( "\"4a+=+24\"
\n" ); document.write( "\"a+=+6\"
\n" ); document.write( "\"b+=+24+-+a\"
\n" ); document.write( "\"b+=+24+-+6\"
\n" ); document.write( "\"b+=+18\"
\n" ); document.write( "The numbers are 6 and 18
\n" ); document.write( "--------------
\n" ); document.write( "--------------
\n" ); document.write( "Length = \"L\"
\n" ); document.write( "width = \"W\"
\n" ); document.write( "(1) \"L%2FW+=+6%2F5\"
\n" ); document.write( "Multiply both sides by \"W\"
\n" ); document.write( "\"L+=+%286%2F5%29W\"
\n" ); document.write( "Substitute this in
\n" ); document.write( "(2) \"L+=+W+%2B+6\"
\n" ); document.write( "\"%286%2F5%29W+=+W+%2B+6\"
\n" ); document.write( "Multiply both sides by \"5\"
\n" ); document.write( "\"6W+=+5W+%2B+30\"
\n" ); document.write( "\"W+=+30\"
\n" ); document.write( "and, from (2)
\n" ); document.write( "\"L+=+30+%2B+6\"
\n" ); document.write( "\"L+=+36\"
\n" ); document.write( "The length is 36 and the width is 30
\n" ); document.write( " -------------
\n" ); document.write( "---------------
\n" ); document.write( "Father's age now is \"F\"
\n" ); document.write( "Father's age \"6\" years ago is \"F+-+6\"
\n" ); document.write( "Son's age now is \"S\"
\n" ); document.write( "Son's age \"6\" years ago is \"S+-+6\"
\n" ); document.write( "It is given that
\n" ); document.write( "(1) \"F+=+S+%2B+32\"
\n" ); document.write( "and
\n" ); document.write( "\"F+-+6+=+17%2A%28S+-+6%29\"
\n" ); document.write( "\"F+-+6+=+17S+-+102\"
\n" ); document.write( "Using (1),
\n" ); document.write( "\"S+%2B+32+-+6+=+17S+-+102\"
\n" ); document.write( "\"16S+=+102+%2B+26\"
\n" ); document.write( "\"16S+=+128\"
\n" ); document.write( "\"S+=+8\"
\n" ); document.write( "and from (1)
\n" ); document.write( "\"F+=+S+%2B+32\"
\n" ); document.write( "\"F+=+8+%2B+32\"
\n" ); document.write( "\"F+=+40\"
\n" ); document.write( "The Father is 40 and the Son is 8
\n" ); document.write( "check:
\n" ); document.write( "\"F+-+6+=+17%2A%28S+-+6%29\"
\n" ); document.write( "\"40+-+6+=+17%2A2\"
\n" ); document.write( "\"34+=+34\"
\n" ); document.write( "OK
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