It is implied that the servant was the one who caused the profit. AT: "I used your mina to make a profit of ten more minas" (See: [[rc://en/ta/man/translate/figs-explicit]])
A mina is 600 grams. Each mina was worth about what someone would be paid in four months. See how you translated this in [Luke 19:13](./13.md). (See: [[rc://en/ta/man/translate/translate-bweight]])