# You put in a flower bed measuring 20 feet by 30 feet. To finish the project you are putting in a uniform border of bark around the outside of the rectangular garden. You have enough bark to cover 336 square feet. How wide should the border be?

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I know the equation I should be using is [(20+x)(30+x)]-(20*30)=x

I know the equation I should be using is [(20+x)(30+x)]-(20*30)=x

##### 1 Answer

Apr 25, 2018

The border of bark is

#### Explanation:

Length of the rectangular flower bed including border is

Breadth of the rectangular flower bed including border is

Let the border of bark be

So excluding border

length becomes

and breadth becomes

Given area of the border

So we have

So