It is true that if you have a family history of substance abuse along with a diagnosis of ADHD, you are at risk at getting a possible diagnosis of FAS or FASD.
Sometimes breaking down a question helps us answer the question. The general question to be answered here is "What is 2/3 of 7/8?". We can solve this by multiplying the fractions together. 2/3 times 7/8 gives us 7/12.
