document.write( "Question 1156608: When bob was 12 his grandmother was 5 times of his age and minus 1/2 of his sister’s age (which was half of bob’s age). Now bob’s granny is 60. How old is bob now? \n" ); document.write( "

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When bob was 12 his grandmother was 5 times of his age and minus 1/2 of his sister’s age (which was half of bob’s age).
\n" ); document.write( "Now bob’s granny is 60. How old is bob now?
\n" ); document.write( ":
\n" ); document.write( "let y = no. of years ago that this was true.
\n" ); document.write( "Bob was 12, so sister was 6
\n" ); document.write( "5(12) - 6 = 60 - y
\n" ); document.write( "60 - 6 = 60 - y
\n" ); document.write( "y = 60 - 54
\n" ); document.write( "y = 6 years
\n" ); document.write( ":
\n" ); document.write( "12 + 6 = 18 yrs is Bob's present age
\n" ); document.write( " \n" ); document.write( "

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