26 campers went rowing and 25 campers went hiking in the morning. 42 campers went rowing in the afternoon. How many campers went rowing and hiking in all?
In the morning, 26 went rowing and 25 went hiking. 
In the afternoon, 42 went rowing. 
How many went hiking in the afternoon? 

There are a total of 67 campers that went rowing and hiking in all.