How many gallons of paint should she buy?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Becky wants to paint the walls in her bedroom. A gallon of paint will cover 
400ft2
. She measures the surface to be painted; it's 
48,960in2
. How many gallons of paint should she buy?
 
She should buy 
 
 whole gallon(s).
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