Posted by Lori on .
If 800ml of a juice drink is 15% grape juice, how much should be added to make a drink that is 20% grape juice?

Algebra 
James Korah,
50 mL
Posted by Lori on .
If 800ml of a juice drink is 15% grape juice, how much should be added to make a drink that is 20% grape juice?
50 mL