Question

A small garden measures 7 ft by 14 ft. A uniform border around the garden increases the total area to 170 ft2. What is the width of the border?
7*14 + 170 = (7+2w)(14+2w)
Now solve for w
A small garden measures 10 ft by 7 ft. A uniform border around the garden increases the total area to 180 ft^2. What is the width of the border?

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