SOLUTION: What pictures demonstrates "Jane can paint a 12-foot by 12-foot wall in 3/4 of an hour? How long will it take her to paint another wall that is 15x16 feet?"

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Question 955126: What pictures demonstrates "Jane can paint a 12-foot by 12-foot wall in 3/4 of an hour? How long will it take her to paint another wall that is 15x16 feet?"
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The areas of the 2 walls are in the
same ratio as the times required to paint them:
( area 1 ) / ( area 2 ) = ( time 1 ) / ( time 2 )
+%28+12%2A12+%29+%2F+%28+15%2A16+%29+=+%28%28+3%2F4+%29%29+%2F+t+
where +t+ is in hrs
+144+%2F+240+=+%28%28+3%2F4+%29%29+%2F+t+
Multiply both sides by +240t+
+144t+=+180+
+t+=+180%2F144+
+t+=+1.25+
The larger wall will take 1 hr 15 min to paint