One region of the world has 449 volcanoes. Of these volcanoes, 128 are known to be active. In this region, what percent of volcanoes are known to be active? Round your answer to the nearest whole percent.

28 percent of volcanoes are known to be active in that region.

Explanation:

Total number of volcanoes in a region = 449

Total number of active volcanoes in that region = 128

Percent of an active volcanoes :

28 percent of volcanoes are known to be active in that region.

i think   the answer is c hope i'm right