how would I solve?

Specialty Smells, Inc. uses a four-step process to manufacture their super-luxurious "Essence of Luxury" brand of perfume. The process consists of (A) measuring the ingredients, (B) mixing the ingredients, (C) filling the bottle, and (D) putting the lid on the bottle. Assuming the process starts a shift in steady state, if the fastest step of this process were allowed to constantly produce for an 8 hour shift, how many more hours would the bottleneck step have to work to complete all the WIP produced? (round your answer to 2 decimal places)