How did the temperature change if: at first it increased by 25 % and then decreased by 40% ?

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lizanosteve lizanosteve · Answer 1 · 2020-12-03T00:30:15+01:00

Answer:

Decreased by 25%

Step-by-step explanation:

Let's take 100 for example.

Step 1: 25% of 100 is 25

Step 2: 100 + 25 = 125

Step 3: 40% of 125 is 50

Step 4: 125 - 50 = 75

Step 5: 75 is N of 100

Step 6: N = 75%

Step 7: 100% - 75% = 25%

Decreased by 25%.

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saimaparvezVT saimaparvezVT · Answer 2 · 2022-07-28T17:12:36+02:00

The temperature change is decreased by 25%

Percentage is defined as ratio expressed as a fraction of 100.

Let the temperature is T

Temperature increased by 25 %

25% of T is 0.25T

T + 0.25T = 1.25T

Temperature decreased by 40 %

40% of 1.25T is 0.5T

1.25T - 0.5T = 0.75T

Since initial temperature = T

Now, final temperature = 0.75T

T - 0.75T = 0.25T

Hence, the temperature change decreased by 25%

Learn more about percentage here:

brainly.com/question/24159063

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