 <translate> If he left his home at 7:50 a.m. and the distance to the pick - up point is 30 minutes away, he arrived at the pick - up point at 7:50 + 30 minutes = 8:20 a.m. If the bus leaves at 8:00 a.m. every day, then Delaney was 8:20 a.m. - 8:00 a.m. = 20 minutes late when the bus had already left.
Thus, the answer is 20. <yor> Tó bá jẹ́ pé aago méje ààbọ̀ òwúrọ̀ ló ti kúrò nílé, tó sì jẹ́ pé ọgbọ̀n ìṣẹ́jú ló máa gbà kó tó dé ibi tí wọ́n ti máa gbé e, a jẹ́ pé aago méje ààbọ̀ ààbọ̀ ààbọ̀ ló ti dé ibi tí wọ́n ti máa gbé e. Tó bá jẹ́ pé aago mẹ́jọ òwúrọ̀ ni bọ́ọ̀sì máa ń gbéra lójoojúmọ́, á jẹ́ pé aago mẹ́jọ ààbọ̀ òwúrọ̀ ni Delaney ti dé, ìyẹn ni pé aago mẹ́jọ ààbọ̀ òwúrọ̀ = ogún ìṣẹ́jú nígbà tí bọ́ọ̀sì náà ti gbéra. Nítorí náà, ìdáhùn náà ni ogún. 