document.write( "Question 327021: a is 4 yrs old and b is thrice a when a is 12 yrs how old will b be? \n" ); document.write( "
Algebra.Com's Answer #234187 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
a= 4 years
\n" ); document.write( "b = 3times a= 12 years
\n" ); document.write( "a will be 12 after 8 years
\n" ); document.write( "when a will be 12 years b will be 12 + 8 = 20 years
\n" ); document.write( "
\n" );