document.write( "Question 625132: seema is 4 years younger than her brother Shiv.After 5 years their ages will be in the ratio of 3 is to 4.Find their present ages. \n" ); document.write( "

Algebra.Com's Answer #393340 by Maths68(1474) $\"\"$ $\"About$

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Let
\n" ); document.write( "Present age of Seema = s years old
\n" ); document.write( "Present age of Shive = h years old\r
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\n" ); document.write( "\n" ); document.write( "Seema is 4 years younger than her brother Shiv
\n" ); document.write( "s=h-4.............(1)\r
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\n" ); document.write( "\n" ); document.write( "After 5 years
\n" ); document.write( "Seema will be = s+5 years old
\n" ); document.write( "Shive will be = h+5 years old
\n" ); document.write( "Then
\n" ); document.write( "Their ages will be in the ratio of 3 is to 4
\n" ); document.write( "(s+5)/(h+5)=3/4
\n" ); document.write( "4(s+5)=3(h+5)
\n" ); document.write( "4s+20=3h+15
\n" ); document.write( "4s-3h=15-20
\n" ); document.write( "4s-3h=-5...................(2)\r
\n" ); document.write( "\n" ); document.write( "Substitute the value of s from (1) to (2)
\n" ); document.write( "4(h-4)-3h=-5
\n" ); document.write( "4h-16-3h=-5
\n" ); document.write( "4h-3h=-5+16
\n" ); document.write( "h=11
\n" ); document.write( "Now substitute the value of h in (1)
\n" ); document.write( "s=h-4.............(1)
\n" ); document.write( "s=11-4
\n" ); document.write( "s=7\r
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\n" ); document.write( "\n" ); document.write( "Present age of Seema = s = 7 years old
\n" ); document.write( "Present age of Shive = h = 11 years old\r
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