Answer:
5760 grams
Step-by-step explanation:
Find the scale factor that A has been multiplied by to get B:
40.32/28 = 1.44
square root 1.44 to get the real sf:
√1.44 = 1.2
then divide 6912 by 1.2 to get the mass of A:
6912/1.2 = 5760 grams
hope this helps!
