風邪(かぜ) kazeが ga治(なお)る() naoruのに noni１(いっ)週(しゅう)間(かん) isshuukanかかった kakatta。 It took a week for the cold to go away. Literal Cold [subject-が] heal [purpose-のに] one-week took. 治るのに一週間かかった states a duration plainly: のに for the goal of healing, plus かかる ('to take [time]'). Simple and factual. healthillness/cold
風邪(かぜ) kazeが ga治(なお)る() naoruのに noni１(いっ)週(しゅう)間(かん) isshuukanかかった kakatta。 It took a week for the cold to go away. Literal Cold [subject-が] heal [purpose-のに] one-week took. 治るのに一週間かかった states a duration plainly: のに for the goal of healing, plus かかる ('to take [time]'). Simple and factual. healthillness/cold