document.write( "Question 627221: Eva is 10 years older than Feni. In 8 years, twice Eva's age will equal to three times Feni's age. How old is each at present. \n" ); document.write( "
Algebra.Com's Answer #394898 by Maths68(1474)\"\" \"About 
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Eva is 10 years older than Feni. In 8 years, twice Eva's age will equal to three times Feni's age. How old is each at present
\n" ); document.write( "Let
\n" ); document.write( "Present age of Eva = e years old
\n" ); document.write( "Present age of Feni = f years old\r
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\n" ); document.write( "\n" ); document.write( "Eva is 10 years older than Feni.
\n" ); document.write( "e=f+10..............(1)
\n" ); document.write( "In 8 years,
\n" ); document.write( "Eva will be = e+8
\n" ); document.write( "Feni will be = f+8
\n" ); document.write( "Then
\n" ); document.write( "Twice Eva's age will equal to three times Feni's age
\n" ); document.write( "2(e+8)=3(f+8)
\n" ); document.write( "2e+16=3f+24
\n" ); document.write( "2e=3f+24-16
\n" ); document.write( "2e=3f+8..............(2)
\n" ); document.write( "Substitute the value of e from (1) to (2)\r
\n" ); document.write( "\n" ); document.write( "2e=3f+8
\n" ); document.write( "2(f+10)=3f+8
\n" ); document.write( "2f+20=3f+8
\n" ); document.write( "2f-3f=8-20
\n" ); document.write( "-f=-12
\n" ); document.write( "Multiply by -1 both sides
\n" ); document.write( "f=12
\n" ); document.write( "Put the value of f in (1)\r
\n" ); document.write( "\n" ); document.write( "e=f+10..............(1)\r
\n" ); document.write( "\n" ); document.write( "e=12+10
\n" ); document.write( "e=22\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Present age of Eva = e = 22 years old
\n" ); document.write( "Present age of Feni = f = 12 years old
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