A square garden has sides of 8ft8\operatorname{ft}. The gardener reduces each side by 1ft1\operatorname{ft} to make space for a pathway. What is the percent decrease in the perimeter of the garden?

Percent decrease = 12.5 % 12.5\%

A square garden has sides of 8 ft 8\operatorname{ft} . The gardener reduces each side by 1 ft 1\operatorname{ft} to make space for a pathway. What is the percent decrease in the perimeter of the garden?

In this problem, we have a square garden whose sides are each eight feet long. The gardener wants to reduce each side by one foot to make space for a pathway. What is the percent decrease in the perimeter of the garden? So to help us understand this problem, let's draw a picture. So we have a square shaped garden whose original side lengths are each eight feet. The gardener wants to reduce the size of this garden to make way for a pathway. So our new garden is going to be a slightly smaller square, and one foot less than eight feet is seven feet. So the side lengths of this new garden will be seven feet each. We want to find the percent decrease. Now, remember percent change is calculated by finding our change in amount and dividing by our original amount. So first, let's identify our old perimeter and our new perimeter. Our old perimeter would be eight plus eight plus eight plus eight, which equals 32 feet. And our new perimeter will be seven plus seven, plus seven, plus seven, which equals 28 feet. To find our change in perimeter, we need to do new minus old. So we have twenty eight minuteus 32 equals negative four. So that's our change in amount. And then we're going to take that change in amount and divide by our original amount of 32 to find our percent change. We get negative 0.125, which as a percent is negative 12.5%. So we can say that the perimeter of the garden changed negative 12.5%. This question asks for the percent decrease. So to word our final answer, we're going to say our percent decrease was 12.5. Because remember, when we word it this way, we can drop the negative from the percent value, because the word decrease implies that the percent is negative.

A square garden has sides of 8 ft ⁡ 8\operatorname{ft} . The gardener reduces each side by 1 ft ⁡ 1\operatorname{ft} to make space for a pathway. What is the percent decrease in the perimeter of the garden?

Percent decrease = 12.5 % 12.5\%

Percent decrease = 0.125 % 0.125\%

Percent decrease = 62.5 % 62.5\%

Percent decrease = 6.25 % 6.25\%

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Percent Problem Solving

Beginning Algebra

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Percent Problem Solving

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Multiple Choice

A square garden has sides of $8 ft$ . The gardener reduces each side by $1 ft$ to make space for a pathway. What is the percent decrease in the perimeter of the garden?

Percent decrease = $0.125 percent sign$

Percent decrease = $62.5 percent sign$

Percent decrease = $6.25 percent sign$

Percent decrease = $12.5 percent sign$

Verified step by step guidance

Identify the original side length of the square garden, which is given as \$8\operatorname{ft}$.

Calculate the original perimeter of the garden using the formula for the perimeter of a square: $P = 4 \times \text{side length}$. So, the original perimeter is \$4 \times 8$.

Determine the new side length after reducing each side by \$1\operatorname{ft}$, which is $8 - 1$.

Calculate the new perimeter with the reduced side length using the same perimeter formula: $P_{new} = 4 \times (8 - 1)$.

Find the percent decrease in the perimeter by using the formula: $\text{Percent decrease} = \left( \frac{P - P_{new}}{P} \right) \times 100\%$, where $P$ is the original perimeter and $P_{new}$ is the new perimeter.

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