Final answer:
Pedro initially took 1/2 pound of trail mix on his hike, and after eating 1/4 pound, he has 1/4 pound of trail mix remaining.
Step-by-step explanation:
Pedro takes a 1/2 pound bag of trail mix on his hike. During the hike he eats 1/4 pound of the trail mix. To find out how much trail mix he has left, we subtract the amount eaten from the initial amount.
The calculation would be as follows:
1/2 pound - 1/4 pound = 2/4 pound - 1/4 pound = 1/4 pound
Therefore, Pedro has 1/4 pound of trail mix left after his hike.