You fill four 1-ounce orders and three 2-ounce orders of triameinoclone 0.1% ointment from the new 1-lb jar on the shelf. How many grams are left in the jar?

I got 154 g but the answer key states 168 g.

1 oz = 28.35 g

16oz - (4+6) oz = 6 oz = 170.1 g

They must have been using 28g/oz.
What were you using? Where did you get 25.67?