11. (12 points) 1 kilogram of soybeans can be made into 3 kilograms of tofu, and 1 kilogram of soybean oil requires 6 kilograms of soybeans. Tofu is 3 yuan per kilogram, and soybean oil is 15 yuan per kilogram. A batch of soybeans totals 460 kilograms, and after being made into tofu or soybean oil and sold, 1800 yuan is obtained. In this batch of soybeans, $\qquad$ kilograms were made into soybean oil.
【Solution】Solution: $3 \times 3=9$ (yuan)
$$
\begin{array}{l} 
15 \div 6=2.5 \text { (yuan) } \\
(9 \times 460-1800) \div(9-2.5) \\
= 2340 \div 6.5 \\
= 360 \text { (kg) }
\end{array}
$$

Answer: 360 kg of this batch of soybeans were made into soybean oil. Therefore, the answer is: 360.