tolong dijawab ya no. 10 makasihh

s = v x t ===> s = 40 x 10 ===> s = 400 
                       s = 50 x 8 ====> s = 400 
                       s = 60 x t =====> s = 400 ===> t = 400/60 ===> t = 6,6 
                       s = 70 x t =====> s = 400 ===> t = 400/70 ===> t = 5,7
                       s = 80 x t =====> s = 400 ===> t = 400/80 ===> t = 5

Jadi jawabannya = B

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