13. You have 360 tons of below deck tonnage and 210 tons of above deck cargo on board. You must load 100 tons of liquid mud below deck. How much more deck cargo can you load

The loading diagram limits below deck and above deck cargo combinations. Adding 100 tons of liquid mud increases the below deck tonnage to 460 tons, which allows for a maximum deck cargo of 275 tons. Subtracting the existing 210 tons of deck cargo allows for an additional 65 tons.