194 и 195!!!!!¡!!!!!!!!!¡!!!!!!!!!!

Question

194 и 195!!!!!¡!!!!!!!!!¡!!!!!!!!!!

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Answer 1

#1
V-x
10x=7x+12
10x-7x=12
3x=12:3
x=4(км/ч)- V
10*4+7*4=40+28=68(км)