Explanation:
Since this scenario already uses mph (miles per hour), you can know that Jada had walked 3 miles in one hour and Elena had walked 2.8 miles in 1 hour. So, simply multiply both numbers by 3 to get how far they would have traveled in 3 hours.
3 * 3 = 9
2.8 * 3 = 8.4
So, after 3 hours, Jada has walked 9 miles and Elena has walked 8.4 miles. This means that if you subtract Elena's total distance from Jada's total distance, you will find how much farther Jada has walked
9 - 8.4 = 0.6 miles
Answer:
In 3 hours, Jada will have walked 0.6 miles farther than Elena.