A.T. Robertson Commentary Matthew 25:16

"Straightway he that received the five talents went and traded with them, and made other five talents." — Matthew 25:16 (ASV)

Straightway (ευθεως). Beginning of verse 16, not the end of verse 15. The business temper of this slave is shown by his promptness.

With them (εν αυτοις). Instrumental use of εν. He worked (ηργασατο), did business, traded with them. "The virgins wait, the servants work" (Vincent).

Made (εποιησεν). But Westcott and Hort read εκερδησεν, gained, as in verse 17. Κερδος means interest. This gain was a hundred per cent.