document.write( "Question 484368: .A old lady had three grandchildren,the difference between two children was 3 years. Her eldest grandchild was 3 times elder than the youngest one and the elder one 2 years more than the sum of the other two. Then wat is the age of the eldest child?
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Algebra.Com's Answer #331436 by ankor@dixie-net.com(22740)\"\" \"About 
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.A old lady had three grandchildren,
\n" ); document.write( "a, b, & c
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\n" ); document.write( "the difference between two children was 3 years.
\n" ); document.write( "b - c = 3
\n" ); document.write( "b = (c+3)
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\n" ); document.write( "Her eldest grandchild was 3 times elder than the youngest one
\n" ); document.write( "a = 3c
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\n" ); document.write( "and the elder one 2 years more than the sum of the other two.
\n" ); document.write( "a = b + c + 2
\n" ); document.write( "replace b with (c+3); replace a with 3c
\n" ); document.write( "3c = (c+3)+ c + 2
\n" ); document.write( "3c = 2c + 5
\n" ); document.write( "3c - 2c = 5
\n" ); document.write( "c = 5 yrs is the youngest
\n" ); document.write( "then
\n" ); document.write( "a = 3(5)
\n" ); document.write( "a = 15 yrs is the eldest
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\n" ); document.write( "Confirm this by finding the age of b
\n" ); document.write( "b = 5 + 3
\n" ); document.write( "b = 8
\n" ); document.write( "Check solutions in the statement:
\n" ); document.write( "\" the elder one 2 years more than the sum of the other two.\"
\n" ); document.write( "15 = 5 + 8 + 2
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