A new beverage, which is a mixture of grape juice and apple juice, is being tested. The test container of 800 milliliters is 15% grape juice. If the response to the beverage causes the maker to increase the percentage of grape juice in the container to 20%, how much grape juice will be added?
Pick one
A) 30
B) 40
C) 50
D) 120
E) 160
So, (120+k)/(800+k)=20/100   Or, (120+k)/(800+k)=15   Or, 600+5k=800+k   Or, 4k=200   Or, k=50   Or, k=50k=50   So, 50 ml of Grape juice , must be added , answer must be (50)
<result>C</result>
A new beverage, which is a mixture of grape juice and apple juice, is being tested. The test container of 800 milliliters is 15% grape juice. If the response to the beverage causes the maker to increase the percentage of grape juice in the container to 20%, how much grape juice will be added?