Question

On a particular day, the temperature in the evening was 28 degrees Celsius. At midnight, it decreased to 21 degrees Celcius. At noon the next day, the temperature was 32 degrees Celsiu. a. Find the percentage decrease in the temperature from evening to midnight. ______%

Answer 1

To find the percentage decrease in temperature from evening to midnight, we first need to calculate the decrease in temperature.

We know that the evening temperature was 28 degrees Celsius and the midnight temperature was 21 degrees Celsius.

To determine how much the temperature decreased, we subtract the midnight temperature from the evening temperature:

28 degrees Celsius - 21 degrees Celsius = 7 degrees Celsius

So, the temperature decreased by 7 degrees Celsius from evening to midnight.

Next, we need to calculate the percentage decrease. This can be done by taking the decrease in temperature (7 degrees Celsius), dividing it by the original temperature (the evening temperature = 28 degrees Celsius), and then multiplying the result by 100 to convert it into a percentage:

( 7 degrees Celsius / 28 degrees Celsius ) * 100 = 25%

Therefore, the temperature decreased by 25% from evening to midnight.