
Mark M. answered 08/23/17
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
18 min = 1,080 sec.
record is 1 hour 1107 seconds
1107 sec = 0.3075 hr
record is 1.3075 hr
d = r · t
d / t = r
26.2 / 1.3075 = r
Can you calculate r?