in six minute solutions for geotechnical for civil pe exam, question 72, why did we use no soil information given in the question, to calculate the capacity of the pile? For the people who doesnt have the book, it is a question that asks pile capacity, which gives the hammer drop distance per blow, , plie length, striking weight, hammer energy rating, pile weight etc.. and the only used the formula of

Q = 2E / (S+0.1)

In the question, all soils data were given too but none used. Why? They gave all gamma, Teta, and chesion for instance. But they only used above formula to calculate the capacity. Why didnt we used any soils data here?