Starting at noon, the temperature dropped steadily at a rate of 1.5 degrees Celsius every hour. How many hours did it take for the temperature to decrease by 9.75 degrees Celsius?

1 answer

It took 6.5 hours for the temperature to decrease by 9.75 degrees Celsius.

9.75 degrees Celsius / 1.5 degrees Celsius per hour = 6.5 hours.