78.26 rpm to be more exact. I learned something today:
Earliest speeds of rotation varied widely, but by 1910 most records were recorded at about 78 to 80 rpm. In 1925, 78.26 rpm was chosen as a standard for motorized phonographs, because it was suitable for most existing records, and was easily achieved using a standard 3600-rpm motor and 46-tooth gear (78.26 = 3600/46). Thus these records became known as 78s (or “seventy-eights”). This term did not come into use until after World War II when a need developed to distinguish the 78 from other newer disc record formats.
https://web.library.yale.edu/cataloging/music/historyof78rpms
Speeds of tapes were almost always multiple related.
30 and 15 inches per second
Then 7 1/2, 3 3/4, 1 7/8 (cassette tape)
I think VCR VHS was weirdly 1 5/16 ips
The 78 basically died in the 1950s. That said some of the early Elvis singles were pressed on 78s as well as the ascendant 45s.