Joshua G. answered 10/24/19
Biostatistics PhD with 5+ Years Experience Instructing Algebra
Since the race car driver who won the 900 mile race was moving at a speed of 109.2 miles an hour, he completed the race in 900 mi/(109.2 mi/hr) ≈ 8.24 hours. This also means that he completed the race in [900 mi./(109.2 mi./hr.]*[(3600 sec.)/1 hr.] ≈ 29670.33 sec., which translates to 8 hours, 14 minutes, 30 seconds, and 33 hundreds of a second.