The temperature at 9am was 13.6 deg. celsius. the temperature at 9pm was 6.4 deg. celsius. what was the average drop in temperature from 9am to 9pm

Temperature at 9 a.m. = 13.6 degree Celsius.

Temperature at 9 p.m. = 6.4 degree Celsius.

Change in temperature = Temperature at 9 a.m.-Temperature at 9 p.m.

Change in temperature = 13.6 - 6.4 = 7.2

So the drop in temperature is 7.2 degree Celsius.

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