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)\"\" \"About 
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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.
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