 
 <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. <ibo> Ọ bụrụ na ọ hapụrụ ụlọ ya n'elekere 7:50 nke ụtụtụ ma jiri nkeji iri atọ gaa n'ebe a ga - eburu ya, ọ pụtara na ọ bịara n'ebe ahụ n'elekere 7:50 gbakwunyere nkeji iri atọ, ya bụ, n'elekere 8:20 nke ụtụtụ. Ọ bụrụ na bọs na-apụ n'elekere asatọ nke ụtụtụ kwa ụbọchị, mgbe ahụ Delaney na-apụ n'elekere asatọ nke ụtụtụ - elekere asatọ nke ụtụtụ = nkeji iri abụọ mgbe bọs ahụ apụworị. N'ihi ya, azịza ya bụ 20. 