Question

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.

Answer 1

The answer is 9.
2.75 - 2.50 = .25
.25 divided by 2.75 = .0909
.0909 x 100 = 9.090, rounded to 9

Answer 2

Answer:  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

$A_d=2.75-2.50=0.25.$

Therefore, the percentage decrease is given by

$P=\dfrac{0.25}{2.75}\times100\%=\dfrac{25}{2.75}\%=9.09\%.$

Rounding to the nearest tenth, we get

P = 9.1%.

Thus, the required percentage decrease is 9.1%.