Question

Jeff was on a bus full of campers. A group of 12 campers got out of the bus while 27 campers stayed inside. How many campers were there in all?

Answer 1

The answer would be 39 campers.

Explanation:

Think about before the 12 campers got off the bus. So, in addition to 27 campers that stayed inside the bus (12+27), it would equal 39 campers in total.