document.write( "Question 804064: In a class of 330 students, there are 60 more girls than boys. How many girls are there in the class? \n" ); document.write( "
Algebra.Com's Answer #484604 by DrBeeee(684)![]() ![]() ![]() You can put this solution on YOUR website! Let g = the number of girls in the class \n" ); document.write( "Let b = the number of boys in the class \n" ); document.write( "Given: \n" ); document.write( "(1) g + b = 330 \n" ); document.write( "and \n" ); document.write( "(2) g = b + 60 \n" ); document.write( "Put g of (2) into (1) and get \n" ); document.write( "(3) b + 60 + b = 330 or \n" ); document.write( "(4) 2b + 60 = 330 or \n" ); document.write( "(5) 2b = 330 - 60 or \n" ); document.write( "(6) 2b = 270 \n" ); document.write( "Now divide each side of (6) by 2 to get \n" ); document.write( "(7) 2b/2 = 270/2 or \n" ); document.write( "(8) b = 135 \n" ); document.write( "Then from (2) we get \n" ); document.write( "(9) g = 135 + 60 or \n" ); document.write( "(10) g = 195 \n" ); document.write( "Let's check these values with (1). \n" ); document.write( "Is (195 + 135 = 330)? \n" ); document.write( "Is (330 = 330)? Yes \n" ); document.write( "Answer: There are 195 girls in the class. \n" ); document.write( " |