document.write( "Question 996777: Every human has blood type A, B, O or AB. 1/10 have type B and 23/50 have type O.\r
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\n" ); document.write( "\n" ); document.write( "What is the probability that someone has blood type A or AB?
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Algebra.Com's Answer #615099 by anand429(138)\"\" \"About 
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Let total humans = 50x
\n" ); document.write( "No. of human having type B = (1/10)*50x = 5x
\n" ); document.write( "No. of human having type O = (23/50)*50x = 23x
\n" ); document.write( "So,
\n" ); document.write( "No. of human having type A or AB = 50x -5x -23x
\n" ); document.write( " = 22x
\n" ); document.write( "So probability that someone has blood type A or AB = 22x/50x
\n" ); document.write( "= 11/25
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