Tourists passed some distance in three days: in the first day one second all distances, and in 2 put one third of that distance that they passed in the first. What part of all distance did they pass in the third Day?


1/3 from 1/2 it it is necessary 1/3*1/2=1/6 (ways) - passed in the second day

1/2+1/6=(3+1)/6=4/6=2/3 - for the 1st and 2nd day of everything

Since all way is 1, for the third day it is necessary 1-2/3=3/3-2/3= 1/3

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