document.write( "Question 131413This question is from textbook Impact Mathmatics
\n" ); document.write( ": I am a Parent helping my child and need guidance to guide them. I would appreciate any help seeing as algebra is not my strong point. Thank you very much in advance. Here is the problem:\r
\n" ); document.write( "\n" ); document.write( "Problem set B question 7\r
\n" ); document.write( "\n" ); document.write( "In a class of 25 students, there are 7 more girls than boys. How many boys are in the class?\r
\n" ); document.write( "\n" ); document.write( "I figured out there are 6 boys and 19 girls, but have no idea how to get it into an equation.
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Algebra.Com's Answer #95926 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Ok, start by assigning variables to the unknown quantities:
\n" ); document.write( "Let B = the number of boys and G = the number of girls.
\n" ); document.write( "From the problem description, you can write:
\n" ); document.write( "1) G+B = 25 \"In a class of 25 students,...\" and...
\n" ); document.write( "2) G = B+7 \"...there are 7 more girls than boys.\"
\n" ); document.write( "Now you substitute the second equation (G = B+7) for the G in the first equation (G+B = 25) and solve for B.
\n" ); document.write( "\"%28B%2B7%29%2BB+=+25\" Combine like-terms.
\n" ); document.write( "\"2B%2B7+=+25\" Subtract 7 from both sides.
\n" ); document.write( "\"2B+=+18\" Finally, divide both sides by 2.
\n" ); document.write( "\"B+=+9\" So there are 9 boys in the class.
\n" ); document.write( "\"G+=+B%2B7\"
\n" ); document.write( "\"G+=+9%2B7\"
\n" ); document.write( "\"G+=+16\" and there are 16 girls in the class.
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