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

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Question 357291: A bottle contains 750ml of fruit punch with a concentration of 50% pure fruit juice. Jin drinks 100ml of the punch and then refills the bottle win 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 ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

*Note: the cheaper brand was added to 650ml of the 50% fruit punch

Let x be the concentration in the punch added

.50*650 + x*100 = .48*750

Simplify and solve

100x = .48*750ml - .50*650ml

100x = 360 -325

100x = 35

x = .35

Concentration in the punch that Jill added was 35%

check your answer

325 + 35 = 360