need help with solving please solve!

Answer:
(a) S=[tex]\frac{D}{T}[/tex]
(B) S(average speed)=65.04[tex]\frac{km}{hr}[/tex]
Step-by-step explanation:
Given
D=S*T
So, S=[tex]\frac{D}{T}[/tex]
and
T=11.5 Hr
D=748 Km.
S(average speed)=[tex]\frac{748}{11.5}[/tex]=65.04 kmph