The correct option is D 72
Number of chocolates in 1 packet = 6
Number of chocolate packets that Sandy buys = 12
Total number of chocolates = 6 x 12
We split 12 as 10 and 2, and then multiply 6 by both of them.
12 = 10 + 2
6 x 10 = 60
6 x 2 = 12
60 + 12 = 72
Thus, 6 x 12 = 72
The total number of chocolates that Sandy buys is 72.