Vani makes a fruit drink for a party. She uses lemonade, strawberry syrup and carbonated water in the ratio 3 : 1 :4. She has enough lenonade and carbonated water to make 6 litres of the fruit drinl. (i) Strawberry syrup is sold in 240-ml bottles Find the number of bottles of strawberry syrup she has to buy. (ii) Using the amount of strawberry syrup bought as calculated in part (i), find how much more lemonade and carbonated water Vani has to buy in order to maintain the ratio of 3 : 1:4