Answer:
His speed is 66.25 miles/hour
Step-by-step explanation:
The rule of the constant speed is:
Speed = Distance ÷ Time
∵ Karim starts his journey at 11:00 a.m. and finishes at 3:00 p.m.
→ Count the hours from 11: 00 a.m. to 3:00 p.m.
∴ He takes 4 hours ⇒ (3 + 12 - 11)
∴ T = 4 hours
∵ The mileage reader is 66,750 miles at 11:00 a.m.
∵ The mileage reader is 67,015 miles at 3:00 p.m.
→ The distance that Karim is driving = the difference between them
∴ The distance that karim is driving = 67,015 - 66,750
∴ D = 265 miles
→ Substitute the values of D and T in the rule above
∵ S = 265 ÷ 4
∴ S = 66.25 miles/hour
∴ His speed is 66.25 miles/hour
