Help me with this plz

Answer this question only if you know the answer! 30 points and

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.