To determine who drove faster without making calculations, we can consider the time it took each person to drive the same distance of 230 miles.
Mel drove 230 miles in 4 hours, while Pia drove the same distance in 5 hours. Since both drove the same distance but Mel took less time (4 hours compared to Pia's 5 hours), we can conclude that Mel drove faster.
In general, when comparing the speeds of two individuals over the same distance, the person who takes less time to cover that distance is the faster driver. Therefore, Mel drove faster than Pia.