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If one quart of paint is exactly enough for two coats of paint on a 9-foot by 10-foot wall, how many quarts of paint are needed to apply one coat of paint to a 10-foot by 12-foot wall? Express your answer as a common fraction

 Mar 22, 2021
 #1
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Two coats  of  paint  will  cover 2 * 9 *10    =  180 sq  ft

 

And a 10 * 12  wall =   120sq ft

 

So

 

1 qt  /  180 sq ft  =    ?  qts  /  120 sq ft           cross-multiply

 

1 * 120  =  180 * ?          divide both sides  by 180

 

120  / 180  =  ?

 

2 / 3   qts  =  ? =    amt to cover  the  10 x 12   wall

 

 

cool cool cool

 Mar 22, 2021

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