A tank holds 400 tons of sea water when filled. How many tons of liquid of specific gravity 0.9300 will it hold when filled to 90% capacity?

Correct Answer: Option B — 326.6

Tank capacity is relative to liquid density. To find the weight of the new cargo, adjust the seawater capacity (400 tons, SG 1.025) by the ratio of the new specific gravity (0.9300 / 1.025), then multiply by the 90% filling limit, yielding 326.6 tons of cargo.