To solve this, we're going to set up an equation based on the information given.
Let's let \( P \) represent the amount of money that Peter has. According to the problem, Shawn has $3 more than twice as much money as Peter. So, we can write this as an equation:
\[ \text{Shawn's money} = 2 \times \text{Peter's money} + 3 \]
We also know that Shawn has $10. So, we can substitute \( \text{Shawn's money} \) with $10:
\[ 10 = 2 \times P + 3 \]
Now let's solve for \( P \):
First, we'll subtract 3 from both sides of the equation to isolate the terms with \( P \) on one side of the equation:
\[ 10 - 3 = 2 \times P \]
\[ 7 = 2 \times P \]
Next, we'll divide both sides of the equation by 2 to solve for \( P \):
\[ \frac{7}{2} = P \]
When we divide 7 by 2, we get 3.5. Therefore, Peter has $3.50.
So, the correct answer is:
d) $3.50
