You are taking part in a charity walk, and you have walked 12.5 miles so far. your girl is to walk 20 miles. how many more miles do you need to walk to meet your goal?

You would need to walk 7.5 miles more to complete your goal.
12.5+7.5=20
Hope it helps!

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Thats where they was ported and the fields that noone really knew much about needed tended, so they put slaves out there do free work and huge profits and so on the north decided to hold its own and was more different way of survival did not have same climate conditions to afford protecting slaves from winter so expenses be diff from south