document.write( "Question 1140975: There are red, blue, and yellow balls in a bag. There is 7 red, and 3 blue. The probability of getting a red ball is 1/7. How many yellow balls are there? \n" ); document.write( "

Algebra.Com's Answer #761528 by ikleyn(52788) $\"\"$ $\"About$

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document.write( "7*7 = 7 + 3 + x\r\n" );
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document.write( "49 = 10 + x\r\n" );
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document.write( "x = 49-10 = 39.\r\n" );
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document.write( "ANSWER.  39 blue balls.\r\n" );
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