Question 155910
Ann has a 32 ounce bowl of M&M's on her cofee table.
The candies are 50% blue M&M's.
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She starts with 32 oz ; 16 oz is blue
She eats x oz. of which half is blue
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She now has 32-x oz ; she has 16-(x/2) blue
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She puts back x oz of which 1/5 is blue
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She now has 32 oz ; she has 16-(x/2) + (1/5)x blue
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EQUATION:
blue - blue + blue = blue
16 - (x/2) + (1/5)x = 0.40*32
16 + (1/5 - 1/2)x = 12.8
(-3/10)x = -3.2
x = 32/3
x = 10 2/3 oz.
She ate 10 2/3 oz
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Cheers,
Stan H.