Final answer:
The difference in the depths of the holes dug by Inga and Megan on the beach is calculated by subtracting the shallower depth from the deeper one, yielding a difference of 6 inches.
Step-by-step explanation:
To find the difference in the depths of the holes dug by Inga and Megan, we subtract the depth of the shallower hole from the depth of the deeper hole. In this case:
- Depth of Inga's hole: 15 inches
- Depth of Megan's hole: 9 inches
The difference is calculated as follows:
Subtract the depth of Megan's hole from Inga's hole: 15 inches - 9 inches = 6 inches.
Therefore, the difference in the depths of their holes is 6 inches.