Alley

Alley measured a meters. At the beginning and end are planted poplar. How many we must plant poplars to get the distance between the poplars 15 meters?

Result

n = (Correct answer is: a/15-1) Wrong answer

Solution:

15(n+1)=a n=a/15115(n+1)=a \ \\ n=a/15-1



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