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It is recommended that one fire extinguisher be available for every 6000 feet in the building write and solve an equation to determine X the number of fire extinguishers needed for building that has 135,000 square feet. Show your work

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One fire extinguisher be available for every 6000 square feet
Let x the number of fire extinguishers needed for building that has 135,000 square feet.
So, the equation that represents this problem is
                                               6000 x = 135,000
Solve for x
                                           ∴ x = 135,000 / 6000
                                                 = 22.5
Rounding to the nearest greater integer
                                          ∴ x = 23
∴  The number of fire extinguishers needed for building = 23