document.write( "Question 189577: The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 45 feet and 6 foot high walls requires 3 quarts of paint, find the amount of paint needed to cover the walls of two rooms that each have a perimeter of 35 feet and 6-foot high walls. How many quarts are needed ( round up to the nearest quart). \n" ); document.write( "

Algebra.Com's Answer #142265 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 45 feet and 6 foot high walls requires 3 quarts of paint,
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\n" ); document.write( "Find the area of this room: 45 * 6 = 270 sq/ft
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\n" ); document.write( " find the amount of paint needed to cover the walls of two rooms that each have a perimeter of 35 feet and 6-foot high walls.
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\n" ); document.write( "Find the area of these two room: 2 * 35 * 6 = 420 sq/ft
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\n" ); document.write( " How many quarts are needed ( round up to the nearest quart).
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\n" ); document.write( "Let x = no. of quarts needed:
\n" ); document.write( " $\"270%2F420\"$ = $\"3%2Fx\"$
\n" ); document.write( "cross multiply
\n" ); document.write( "270x = 420 * 3
\n" ); document.write( "x = $\"1260%2F270\"$
\n" ); document.write( "x = 4.67 ~ 5 quarts required \n" ); document.write( "

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