document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522650>Question 522650</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jaya is 10 yrs younger than Sid. If you increase both of their ages by 20 %, the difference between their ages is 18 less than Jayas current age.  How old is Sid? </SPAN>\n" );
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document.write( "Let <BR>\n" );
document.write( "Current age of Jaya = j<BR>\n" );
document.write( "Current age of Sid = s\r<BR>\n" );
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document.write( "Jaya is 10 yrs younger than Sid\r<BR>\n" );
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document.write( "s=j+10..............(1)\r<BR>\n" );
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document.write( "increase both of their ages by 20 %<BR>\n" );
document.write( "Sid = s * 20/100 = s/5<BR>\n" );
document.write( "Jaya = j * 20/100 = j/5<BR>\n" );
document.write( "Then<BR>\n" );
document.write( "Jaya will be = j + j/5 = (5j + j)/5 = 6j/5<BR>\n" );
document.write( "Sid will be = s + s/5 = (5s+s)/5 = 6s/5\r<BR>\n" );
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document.write( "The difference between their ages is 18 less than Jayas current age.<BR>\n" );
document.write( "The difference between their ages is 18 less than Jayas current age.<BR>\n" );
document.write( "6s/5-6j/5 = 18-j<BR>\n" );
document.write( "Multiply by 5 both sides of the equation<BR>\n" );
document.write( "6s-6j=90-5j<BR>\n" );
document.write( "6s-6j+5j=90<BR>\n" );
document.write( "6s-j=90................(2)<BR>\n" );
document.write( "Put the value of s from (1) to (2)<BR>\n" );
document.write( "6(j-10)-11j=90<BR>\n" );
document.write( "6j-60-j=90<BR>\n" );
document.write( "5j=90+60<BR>\n" );
document.write( "5j=150<BR>\n" );
document.write( "5j/5=150/5<BR>\n" );
document.write( "j=30<BR>\n" );
document.write( "Put the value of j in (1)<BR>\n" );
document.write( "s=j+10<BR>\n" );
document.write( "s=30+10<BR>\n" );
document.write( "s=40\r<BR>\n" );
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document.write( "Current age of Jaya = j = 30<BR>\n" );
document.write( "Current age of Sid = s = 40\r<BR>\n" );
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document.write( "Check<BR>\n" );
document.write( "======<BR>\n" );
document.write( "If you increase both of their ages by 20 %, the difference between their ages is 18 less than Jayas current age\r<BR>\n" );
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document.write( "(40+40(20/100)) - (30+30(20/100)) = 30-18<BR>\n" );
document.write( "(40+40(1/5))-(30+30(1/5))=12<BR>\n" );
document.write( "(40+8)-(30+6)=12<BR>\n" );
document.write( "48-36=12<BR>\n" );
document.write( "12=12\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );