There are a few steps to help complete this challenge!
Step 1 = Work out how many boxes of dog treats have been eaten. The total.
Step 2 = Find the lowest common denominator for 4, 10, 5, 12, 20 and 15).
Step 3 = Convert the total into an improper fraction that has that common denominator you found.
Step 4 = Find 6 fractions that can total the improper fraction you've created.
Step 5 = Make sure those fractions can be simplified so that they match the criteria. This means you should have 6 fractions with denominators of 4, 10, 5, 12, 20 and 15.