Answer:
The maximum weight capacity will be less than 180 N
Explanation:
According to the Archimedes principle, an object floats in the fluid if its buoyant force is greater than the weight of the object.
Here the buoyant force is 260 N so weight up to < 260, the boat will float.
Let the maximum weight capacity be x.
x + 80 < 260
or, x + 80 - 80 < 260 - 80
or, x < 180
So the maximum allowed weight will be less than 180 N.