document.write( "Question 947161: John is 6 years older than his brother. He will be twice as old as his brother in 4 years. How old is John now? \n" ); document.write( "
Algebra.Com's Answer #577866 by macston(5194)![]() ![]() You can put this solution on YOUR website! B=brother's age;J=John's age=B+6 \n" ); document.write( "J+4=2(B+4) Substitute for J \n" ); document.write( "(B+6)+4=2(B+4) \n" ); document.write( "B+10=2B+8 Subtract 8 from each side \n" ); document.write( "B+2=2B Subtract B from each side \n" ); document.write( "2=B John's brother is 2 years old \n" ); document.write( "J=B+6=8 ANSWER John is 8 years old \n" ); document.write( "CHECK \n" ); document.write( "J+4=2(B+4) \n" ); document.write( "8+4=2(2+4) \n" ); document.write( "12=12 \n" ); document.write( " |