It costs a family $216 to have a 9 ft-by-12 ft wooden floor
refinished. At that rate, how much would it cost them to have a 12 ft-by-16 ft
wooden floor refinished?

A)2,592
B)384
C)288

B)384

Step-by-step explanation:

(9*12)/216=(12*16)/x

108/216=192/x

108x=41472

x=41472/108

x=$384

50

step-by-step explanation:

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.