 
 <translate> A car traveled from San Diego to San Francisco at an average speed of 51 miles per hour. If the journey back took twice as long, what was the average speed of the trip?
Options:
(A) 24.
(B) 34.
(C) 36.
(D) 42.
(E) 44. Think first, then make a decision. Some random thoughts: <hau> Wata mota ta yi tafiya daga San Diego zuwa San Francisco a matsakaicin gudun mil 51 a kowace awa. Idan tafiyar dawowa ta ɗauki sau biyu, menene matsakaicin saurin tafiyar? Zaɓuɓɓuka: (A) 24. (B) 24. (B) 34. (C) 36. (D) 42. (D) (E) 44 ne kawai. Ka yi tunani kafin ka yanke shawara. Wasu tunani bazuwar: 