Respuesta :
Initially quantity of modelling clay Mrs. Lia had =12 pounds
If she divides them into 1/2 pounds she will be having 24 blocks of half pound modelling clay.
Now out of these 24 half pound blocks she sets aside 6 .
Rest she gave to her art class.
Number of half pound blocks she gave to her art class = total number of half pound blocks - blocks she kept aside = 24 -6 =18
Answer : Mrs. Lia gave 18 blocks of half pound clay to her class.