ボーナスが出ると聞いて急に張り切るなんて、現金なやつだ。
Suddenly getting fired up the moment he hears there's a bonus — what a mercenary fellow.
お菓子をもらったとたんに機嫌が直るとは、現金な子だ。
What a calculating child, cheering up the instant she was given sweets.
現金なもので、褒められると急にやる気が出てきた。
Self-interested as I am, I suddenly felt motivated once I was praised.