A ski resort offers a weekend ski package for $80 per person

or $6000 for a group of 80 people. Which would be the
less expensive option for a group of 80?

it would be cheaper to pay the 6000 for the whole group,

How much does it cost for 80 people at $80 each? Compare that to $6000.

To determine which option is less expensive for a group of 80 people, we need to compare the total cost of the weekend ski package for individual pricing ($80 per person) with the cost of the group pricing ($6000 for 80 people).

Calculating the cost of the individual pricing for 80 people:
Individual cost = $80 per person x 80 people
Individual cost = $6400

Comparing the individual cost ($6400) with the group pricing ($6000), we can see that the less expensive option for a group of 80 people would be the group pricing option ($6000).