If fruit punch is made by mixing fruit juice and lemonade together in the ratio 3:2 how much lemonade and fruit juice does she need for 35 litres?
3+2=5 //adding the parts of the ratio for the ratio of the whole.
3/5 *35=21 // one part divided by the whole for the fraction of how much is the first part. Then multiply this by the whole for the ammount of liters that make up that one part.
2/5 *35=14
So 21 liters would be fruit juice and 14 liters would be lemonade.
