Answer :

I guess 80 km per hour.

[tex] \rm \hookrightarrow \: Speed= \dfrac{Distance}{Time}[/tex]

[tex] \rm \hookrightarrow \: Speed= \dfrac{160}{2}[/tex]

[tex] \rm \hookrightarrow \: Speed= \cancel\dfrac{160}{2}[/tex]

[tex] \rm \hookrightarrow \: Speed= 80km/h[/tex]

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