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38 seedlings
solve 2n + 2 = 78
subtract 2 from both sides
2n = 78 - 2 = 76
divide both sides by 2
n = = 38
number of seedlings that can be planted is 38
Given:
The scale of a map is .
The distance between two buildings is 60 miles.
To find:
The distance between the given building on the map.
Solution:
We have,
It means, 80 miles in real life = on the map.
1 mile in real life = on the map.
60 mile in real life = on the map.
= on the map.
= on the map.
Therefore, the buildings are apart on the map.