Answer:
74miles/hr
Explanation:
Kevin can travel 23¹/₂ miles in ¹/₄ hour.
The average speed in miles per hour
Speed = distance / time
distance = 23¹/₂ miles= 2x23+1/2= 46+1/2=47/2
Time = ¹/₄ hour
Speed = 23¹/₂/ ¹/₄= ⁴⁷/₂/ ¹/₄= ⁴⁷/₂* ⁴/₁=⁴⁷/₁* ²/₁= ⁴⁷*²/₁= ⁷⁴/₁= 74miles/hr