2godz ------------ 7 i 1/2km
x godz ----------- 1km
x = (2 * 1) : 7 i 1/2 = 2 : 15/2 = 2 * 2/15 = 4/15 godz = 16/60 godz = 16 min ---- odpowiedx
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2godz ------------ 7 i 1/2km
x godz ----------- 1km
x = (2 * 1) : 7 i 1/2 = 2 : 15/2 = 2 * 2/15 = 4/15 godz = 16/60 godz = 16 min ---- odpowiedx