The price of a cup of coffee was $2.75 yesterday. today, the price fell to $2.50 . find the percentage decrease. round your answer to the nearest tenth of a percent.

 The required percentage decrease is 9.1%.

Step-by-step explanation:  Given that the price of a cup of coffee was $2.75 yesterday and today, the price fell to $2.50.

We are to find the percentage decrease and to round the answer to the nearest tenth of a percent.

We have

cost price of the cup of coffee yesterday = $2.75

and

cost of the cup of coffee today = $2.50.

So, the amount of decrease in the cup of coffee is

Therefore, the percentage decrease is given by

Rounding to the nearest tenth, we get

P = 9.1%.

Thus, the required percentage decrease is 9.1%.

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step-by-step explanation: