document.write( "Question 805421: Bob is 4 times the age of his grandson. If Bob is 72, how old is his grandson? \n" ); document.write( "
Algebra.Com's Answer #485351 by MARIO OWHOLO(4)\"\" \"About 
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Let the age of bob`s granson be x
\n" ); document.write( "One can obtain such equation 4*x=72
\n" ); document.write( "; X=72\4
\n" ); document.write( " X=18
\n" ); document.write( "His granson is 18yrs old.
\n" ); document.write( "Q.E.D.
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