Can someone please do these two!! I would really appreciate it!

Step-by-step explanation:
a) d = 60 mi
t = 45 min = 0.75 hr
v = d/t
= (60 mi)/(0.75 hr)
= 80 mi/hr
b) t = d/v
= (75 mi)/(50 mi/hr)
= 1.5 hrs