document.write( "Question 1041632: A magician uses a cubic box containing blue and black colored balls to perform a trick. The total number of balls in the box is 35 and the number of black balls is 15 less than the number of blue balls. How many blue balls are there in the magician's box? \n" ); document.write( "

Algebra.Com's Answer #656638 by jorel555(1290) $\"\"$ $\"About$

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Let n be black balls. Then:
\n" ); document.write( "n+(n+15)=35
\n" ); document.write( "2n=20
\n" ); document.write( "n=10
\n" ); document.write( "n+15=25 blue balls. ☺☺☺☺ \n" ); document.write( "

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