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16 km------0,8
x km------1
x= (16 ×1)÷0,8=16 ÷ 0,8= 20 (km)
odp. Cała droga ma 20 km.
pozdro ;dd
16km - 80%
x - 100%
16km*100% = 80%x / 80%
20km = x
Odp. Cała droga ma 20km