Answer:
14 minutes and 4 seconds
Explanation:
To solve this you need to use the time speed distance formula.
Distance = Speed × Time
Speed = Distance / Time
Time = Distance / Speed
Speed: 64 mile per hour (km/h)
Distance: 15 miles
Time = Distance / Speed
Time = 70 mile / (50 mile/h)
Time = 14 minutes and 4 seconds
Hope this helps!