document.write( "Question 987088: Shelly is 3 years older than Michele. Four years ago the sum of their age was 67. Find the age of each person now. \n" ); document.write( "
Algebra.Com's Answer #607862 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "If the sum of ages 4 years ago was 67, current sum is 75 \n" ); document.write( "(67 + 4 years for each person) \n" ); document.write( ". \n" ); document.write( "S=Shelly's age; M=Michelle's age=S-3 \n" ); document.write( ". \n" ); document.write( "S+M=75 \n" ); document.write( "S+S-3=75 \n" ); document.write( "2S=78 \n" ); document.write( "S=39 ANSWER 1: Shelly is 39 years old. \n" ); document.write( "M=S-3=39-3=36 ANSWER 2: Michelle is 36 years old. \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( "4 years ago, sum was 67: \n" ); document.write( "(S-4)+(M-4)=67 \n" ); document.write( "(39-4)+(36-4)=67 \n" ); document.write( "35+32=67 \n" ); document.write( "67=67 \n" ); document.write( " |