# Altitude difference

What a climb in per mille of the hill long 4 km and the altitude difference is 6 meters?

Correct result:

p =  1.5

#### Solution:

$x=4 \ km \rightarrow m=4 \cdot \ 1000 \ m=4000 \ m \ \\ y=6 \ \text{m} \ \\ \ \\ p=1000 \cdot \ \dfrac{ y }{ x }=1000 \cdot \ \dfrac{ 6 }{ 4000 }=\dfrac{ 3 }{ 2 }=1.5 \ ‰$

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