In City a The temperature is changing by -5 f per hour in city b the temperature is changing by -3 f per hour if the temperature in both cities started at 70 f which city is warmer and what is the difference in their temperatures after 5 hours
After 5 hours, the temperature in City A would decrease by 5°F per hour * 5 hours = <<5*5=25>>25°F.
The temperature in City B would decrease by 3°F per hour * 5 hours = <<3*5=15>>15°F.
The new temperature in City A would be 70°F - 25°F = 45°F.
The new temperature in City B would be 70°F - 15°F = 55°F.
Therefore, after 5 hours, City B would be warmer than City A by 55°F - 45°F = 10°F.