document.write( "Question 1151575: There are 20 children in a class, and 12 of the children are girls. Of the girls, 8 brought a lunchbox, and of the boys 6 did NOT bring a lunchbox. If a child from the class is chosen at random, what is the probability that the child brought a lunchbox?\r
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document.write( "A. 15
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document.write( "B. 310
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document.write( "C. 12
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document.write( "D. 34
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document.write( "E. I don't know.
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Algebra.Com's Answer #773376 by ikleyn(52787)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "There are 12 girls and 20-12 = 8 boys in the class.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Of the girls, 8 brought a lunchbox.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Of the boys, 8-6 = 2 brought a lunchbox.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "In all, 8+2 = 10 children brought a lunchbox.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The probability under the problem's question is, therefore,\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |