Grace's age is 3/8th the age of her grandmother. Her grandmother is twice the age of Grace's mother. If Grace's mother is 80 years old, how old is Grace? Let's think step by step and output the final answer after "####".
user
Grace's grandmother is 2 * 80 years = <<2*80=160>>160 years old.
Grace's age is 3/8 * 160 years = <<3/8*160=60>>60 years old.
#### 60
Grace's age is 3/8th the age of her grandmother. Her grandmother is twice the age of Grace's mother. If Grace's mother is 80 years old, how old is Grace?
train