Answer:
72 babies altogether
Step-by-step explanation:
2 = The 2 Gerbils
6 = the 6 baby gerbils each has
12 months = a year
_________________________
2 months) 2 x 6 = 12
4 months) 2 x 6 = 12
6 months) 2 x 6 = 12
8 months) 2 x 6 = 12
9 months) 2 x 6 = 12
12 months) 2 x 6 = 12
12 + 12 + 12 + 12 + 12 + 12 = 72