SOLUTION: A bottle contains 750 mL of fruit punch with a concentration of 50% pure fruit juice. Jill drinks 100 mL of the punch and then refills the bottle with an equal amount of a cheaper

Question 776871: A bottle contains 750 mL of fruit punch with a concentration of 50% pure fruit juice. Jill drinks 100 mL of the punch and then refills the bottle with an equal amount of a cheaper brand of punch. If the concentration of juice in the bottle is now reduced to 48%, what was the concentration in the punch that Jill added?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A bottle contains 750 mL of fruit punch with a concentration of 50% pure fruit juice. Jill drinks 100 mL of the punch and then refills the bottle with an equal amount of a cheaper brand of punch. If the concentration of juice in the bottle is now reduced to 48%, what was the concentration in the punch that Jill added?
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fruit + fruit = fruit
0.50*650 + x*100 = 0.48(650+100)
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50*650 + 10000x = 48*650 + 48*100
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10000x = 3500
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x = 0.35 = 35% (concentration of added punch)
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Cheers,
Stan H.
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