Final answer:
To find out how many miles Santiago had traveled when he fell asleep, we can multiply the total length of the trip by the percentage of the way he fell asleep. Therefore, Santiago had traveled approximately 176 miles when he fell asleep.
Step-by-step explanation:
To find out how many miles Santiago had travelled when he fell asleep, we can multiply the total length of the trip by the percentage of the way he fell asleep. In this case, the total length of the trip is 400 miles and Santiago fell asleep 44% of the way through. Using these values, we can calculate the number of miles Santiago had traveled as:
Number of miles traveled = Total length of the trip × Percentage fallen asleep
Number of miles traveled = 400 miles × 0.44
Number of miles traveled ≈ 176 miles
Therefore, Santiago had traveled approximately 176 miles when he fell asleep.