192. Why? Because my brain told me, and so would my calculator.
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16 - x > 12 First add x to both sides: 16 > 12 + x Now subtract 12 from both sides: 4 > x x < 4
x = 16 x * .75 = 12 12 / .75 = x
12 X 16 = 192
LCM of 12 & 16 is 48. LCM of 48 and 30 is 240, ie 20 x 12, 15 x 16 and 8 x 30.
16 cu ft = 16 x 123 cu in = 16 x 12 x 12 x 12 cu in = 27,648 cu in+++NB the error in the question - cubic feet to cubicinches.