document.write( "Question 857455: A bag contains 16 red balls and 20 blue balls only. How many white balls must be added to the bag so that the probability of randomly picking a red ball is equal to 2/5? \n" ); document.write( "

Algebra.Com's Answer #516580 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "Let x represent the number of white balls added    
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document.write( "Total of (36 + x) balls: 16 red, 20 blue and x white
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document.write( "P(red ball) =  | Cross Multiplying to solve
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document.write( "                  80 = 72 + 2x
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document.write( "                   8 = 2x
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document.write( "                   x = 4, the number of white balls added
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document.write( "CHECKING our answer***
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document.write( "  16/40 = 2/5
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document.write( "Wish You the Best in your Studies.
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