Answer:
1. Three batches 
2.represent milk with a circle and cocoa with a square 
3. a. 6:2 and 9:3 
 b. 3:2 and 1:3
Explanation:
1. circle every 3 mustard seeds, 5 chili power and 1 salt 
2. So draw two circles and five squares to represent 1 batch of chocolate milk and to represent 2 do the same thing (make sure to circle the two separate batches)