There are 72 tent sites at the campground. 35 of the sites can have 2 tents. The rest can have just one tent. How many tents could be at the campground?

35 sites at possible 2 tents = 70

Total 72 sites - the 35 sites = 37 sites remaining

The remaining 37 can have 1 tent = 37

Add possible 70 to 37 = 107

There is a possible 107 tents that could be at campground.