guerrero wrote:A bottle is 80% full. the liquid in the bottle consists of 60% guava juice and 40% pineapple juice. the remainder of the bottle is then filled with 70 ml of rum. How much guava is in the bottle?
a)210ml
b)168ml
c)170ml
d)200ml
e)250ml
OA B
Since the mixture constitutes 80% of the bottle, the added rum constitutes 20% of the bottle:
mixture : rum = 80:20 = 4:1.
Since the actual amount of rum is 70ml, both parts of the ratio must be multiplied by 70:
mixture : rum = (70*4) : (70*1) = 280:70.
Thus, the filled bottle contains 280ml of the original mixture and 70ml of added rum.
Since 60% of the original mixture is guava, the amount of guava = .6(280) = 168 ml.
The correct answer is
B.
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