Answer:
30,000 miles
Step-by-step explanation:
This is the answer because:
1) There are 36 months in 3 years
2) Divide 36 with 6 because we know this person drives 5,000 miles in 6 months
36/6 = 6
3) Finally, multiply 5,000 and 6 which is 30,000
5,000 x 6 = 30,000
Therefore, the answer is 30,000 miles
Hope this helps! :D