document.write( "Question 732837: Percy is 8 years older than Ginny. In ten years time he will be three times Ginny's present age. How old is Percy now? \n" ); document.write( "

Algebra.Com's Answer #448088 by vidhyak(98) $\"\"$ $\"About$

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Let Percy's age be p
\n" ); document.write( "Let Ginny's age be g\r
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\n" ); document.write( "\n" ); document.write( "Percy is 8 years older than Ginny
\n" ); document.write( "g + 8 = p -----------------------eq. 1\r
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\n" ); document.write( "\n" ); document.write( "In ten years time he will be three times Ginny's present age\r
\n" ); document.write( "\n" ); document.write( "In ten years Percy will be p + 10 yrs old
\n" ); document.write( "Three times Ginny's age = 3g
\n" ); document.write( "p + 10 = 3g --------------eq 2\r
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\n" ); document.write( "\n" ); document.write( "Substitue eq1 in eq2
\n" ); document.write( "p + 10 = 3g
\n" ); document.write( "g + 8 + 10 = 3g
\n" ); document.write( "g + 18 = 3g
\n" ); document.write( "2g = 18\r
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\n" ); document.write( "\n" ); document.write( "g = 9\r
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\n" ); document.write( "\n" ); document.write( "Ginny's age is 9 years\r
\n" ); document.write( "\n" ); document.write( "Substitute g = 9 in eq 1\r
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\n" ); document.write( "\n" ); document.write( "g + 8 = p
\n" ); document.write( "9 + 8 = p\r
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\n" ); document.write( "\n" ); document.write( "P = 17 \n" ); document.write( "

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