Answer:
he age of girl 3 [tex]\frac{1}{2}[/tex] years ago is 8.5 years .
Step-by-step explanation:
Given as :
The present age of seventh grader girl = 12 years
Let The age of her 3 [tex]\frac{1}{2}[/tex] years ago = x years
So The age of girl [tex]\frac{7}{2}[/tex] years ago = x years
Now, According to question
The age of girl 3.5 years ago = 12 - 3.5
Or, The age of girl 3.5 years ago = 8.5 years
Hence The age of girl 3 [tex]\frac{1}{2}[/tex] years ago is 8.5 years . Answer
