Starting in column H Gallons of Water (per shirt), use the VLOOKUP function to start with the value from the PRODUCT column as an input and retrieve the appropriate related value from the Gallons column in the table at the top of the Assumptions worksheet. If done correctly, this (per shirt) number of gallons should appear in the Gallons of Water (per shirt) table for every batch (see screenshot below for the first few rows). (HINT: Category in column G also uses the VLOOKUP function, use that and Excel Help as needed)