Question

Geologist visits 20 volcanoes in Alaska and California. 15% of the volcanoes are in California.

How many volcanoes does the geologist visit in California and how many in Alaska?

Answer 1

3 in California

17 in Alaska

Explanation:

Multiple 20 times 15% (also known as 0.15)

3 is for California

Subtract from 20

17 is for Alaska