<human>:  When Mark bought his first tv it was was 24 inches wide and 16 inches tall. It cost $672. His new tv is 48 inches wide and 32 inches tall and costs $1152. How much more expensive as measure by cost per square inch, was his first TV compared to his newest TV?
<bot>: How many square inches was Mark's first TV? ** His first TV was 384 square inches because 24 x 16 = <<24*16=384>>384
How much did Mark's first TV cost per square inch? ** His first TV cost $1.75 per square inch because 672 / 384 = <<672/384=1.75>>1.75
How many square inches is Mark's new TV? ** His new TV is 1,536 square inches.
How much does Mark's new TV cost per square inch? ** It costs $.5 per square inch because 1152/ 1,536 = .5
How much more expensive was Mark's first TV compared to his newest TV? ** His old TV cost $1 more per square inch because 1.75 - .75 = <<1.75-.75=1>>1
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