Question 1057467
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Two adjacent walls of a 40 ft by 35 ft office are to be painted the walls are 8 ft high and include no doors or windows. 
If each gallon of paint to be used covers 450 square feet, how many gallons are needed
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The number of gallons = {{{(40*8 + 35*8)/450}}}.


Think why. 


Look in the formula.


The formula will explain you everything.