document.write( "Question 982043: Sofia is 7 years older than her cousin. In 4 years, she will be twice as old as her cousin. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #602916 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "C=cousin's age; S=Sofia's age=C+7yrs \n" ); document.write( ". \n" ); document.write( "S+4yrs=2(C+4yrs) \n" ); document.write( "S+4yrs=2C+8yrs \n" ); document.write( "S=2C+4yrs Substitute for S \n" ); document.write( "C+7yrs=2C+4yrs \n" ); document.write( "3yrs=C ANSWER 1: Cousin is 3 years old. \n" ); document.write( ". \n" ); document.write( "S=C+7yrs=3yrs+7yrs=10yrs ANSWER 2: Sofia is 10 years old. \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( "S+4yrs=2(C+4yrs) \n" ); document.write( "10yrs+4yrs=2(3yrs+4yrs) \n" ); document.write( "14yrs=2(7yrs) \n" ); document.write( "14yrs=14yrs \n" ); document.write( " |