Let's denote the number of John's stickers as \( J \) and the number of Lisa's stickers as \( L \).
From the problem, we know two things:
-
Lisa has 12 more stickers than John: \[ L = J + 12 \]
-
Together, they have a total of 60 stickers: \[ L + J = 60 \]
Now we can substitute the expression for \( L \) from the first equation into the second equation:
\[ (J + 12) + J = 60 \]
This simplifies to:
\[ 2J + 12 = 60 \]
Next, we subtract 12 from both sides:
\[ 2J = 48 \]
Now, divide both sides by 2:
\[ J = 24 \]
Using the value of \( J \), we can find \( L \):
\[ L = J + 12 = 24 + 12 = 36 \]
Now we have:
- John has 24 stickers.
- Lisa has 36 stickers.
Next, we can find the ratio of the number of Lisa's stickers to the number of John's stickers:
\[ \text{Ratio of Lisa's stickers to John's stickers} = \frac{L}{J} = \frac{36}{24} \]
To simplify this ratio, we divide both the numerator and the denominator by their greatest common divisor, which is 12:
\[ \frac{36 \div 12}{24 \div 12} = \frac{3}{2} \]
Thus, the ratio of the number of Lisa's stickers to the number of John's stickers is:
\[ \boxed{\frac{3}{2}} \]