document.write( "Question 984236: Chris has 7 more dollars coins than 25 cent coins. Altogether he has 19.50. How many dollar coins has she? \n" ); document.write( "
Algebra.Com's Answer #605014 by macston(5194) You can put this solution on YOUR website! . \n" ); document.write( "Q=number of quarters; D=dollars=Q+7 \n" ); document.write( ". \n" ); document.write( "$0.25Q+$1.00D=$19.50 \n" ); document.write( "$0.25Q+$1.00(Q+7)=$19.50 \n" ); document.write( "$0.25Q+$1.00Q+$7.00=$19.50 \n" ); document.write( "$1.25Q=$12.50 \n" ); document.write( "Q=10 She had 10 quarters \n" ); document.write( ". \n" ); document.write( "D=Q+7=10+7=17 \n" ); document.write( "ANSWER: She had 17 dollar coins. \n" ); document.write( " |