human
Melinda is taking a 1200-mile trip with her family to visit their cousins. How much time will they save if they drive 60 miles an hour instead of 50 miles an hour?
assistant
How many hours would the trip take at 60 mph? ** Going 60 mph, the trip would take 1200-mile trip / 60 miles an hour = <<1200/60=20>>20 hours.
How many hours would the trip take at 50 mph? ** Going 50 mph, the trip would take 1200-mile trip / 50 miles an hour = <<1200/50=24>>24 hours.
How many hours would they save if they drive 60 mph instead of 50 mph? ** Melinda’s family would save 24 – 20 = <<24-20=4>>4 hours.
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