Answer:
4.15 pm
Explanation:
distance travelled in 1/2hour = 30 miles
distance travelled in 1 hour = 30 x 2 = 60 miles
Time taken to travel 75 miles = 75 / 60 = 1.25 hours = 1 hour 15 minutes
Time when they will reach the destination = 3.00 + 1 hr 15 min.
= 4.15 pm