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Ritu took a non-stop flight to visit her grandmother. The 750-mile trip took three hours and 45 minutes. Because of the bad weather, the return trip took four hours and 45 minutes. What was her average speed for the round trip?

Ritu took a non-stop flight to visit her grandmother. The 750-mile trip took three hours and 45 minutes. Because of the bad weather, the return trip took four hours and 45 minutes. What was her average speed for the round trip? Correct Answer 176.47 mile per hour

Total distance covered = 750 + 750 = 1500 miles

Total time = 3 hrs 45 min + 4 hrs 45 min = 3.75 + 4.75 = 8.5 hrs

∴ Average Speed = 1500/8.5 = 176.47 mile per hour

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