document.write( "Question 1002578: Question: Jake is 13 years old. In 3 years his grandpa will be twice as old as Jake's dad, and in 7 years his grandpa will be four times older than Jake. How old is Jake's dad?
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document.write( "I've tried 13*4=52. 52-7=45. 45+3=48. 48/2=24.
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document.write( "I'm not sure what steps I'm missing or what math I'm doing wrong \n" );
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Algebra.Com's Answer #619446 by mananth(16946)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Jack is 13 now\r \n" ); document.write( "\n" ); document.write( "After 7 years he will be 20\r \n" ); document.write( "\n" ); document.write( "grandpa will be 4 time older than Jake\r \n" ); document.write( "\n" ); document.write( "20 + 80 = 100\r \n" ); document.write( "\n" ); document.write( "(three years from now means 4 years earlier )\r \n" ); document.write( "\n" ); document.write( "4 years ago grandpa was 96\r \n" ); document.write( "\n" ); document.write( "and at that time he was twice dad,s age\r \n" ); document.write( "\n" ); document.write( "dad,s age = 48\r \n" ); document.write( "\n" ); document.write( "dads age now is 48-3 = 45 years\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |