Problema Solution
Daytona 500(miles)was shortened to 450 miles in 1974 due to energy crisis. In that year it was won by Richard petty,who averaged 140.9 miles per hour. What was petty's time?
Answer provided by our tutors
let
d = 450 miles the distance
v = 140.9 mph the speed
t = ? the time in hours
since speed = distance/time => time = distance/speed
v = d/t
t = d/v
t = 450/140.9
t = 3.19 h
t = 3 27.3/140.9 h = 3 h (27.3*60)/140.9 min = 3h 11 min (88.1*60)/140.9 s = 3h 11 min 38 s
t = 3 h 11 min 38 s