To find the ratio of mechanical pencils to regular pencils, we start by identifying the quantities:
- Mechanical pencils: 3
- Regular pencils: 6
The ratio of mechanical pencils to regular pencils is expressed as:
\[ \text{Ratio} = \frac{\text{Number of mechanical pencils}}{\text{Number of regular pencils}} = \frac{3}{6} \]
This can be simplified by dividing both numbers by 3:
\[ \frac{3 \div 3}{6 \div 3} = \frac{1}{2} \]
So, the ratio of mechanical pencils to regular pencils is 1:2.
To describe the ratio, this means for every 1 mechanical pencil, there are 2 regular pencils.
To find how many more regular pencils than mechanical pencils there are, we subtract the number of mechanical pencils from the number of regular pencils:
\[ \text{Difference} = \text{Number of regular pencils} - \text{Number of mechanical pencils} = 6 - 3 = 3 \]
Therefore, there are 3 more regular pencils than mechanical pencils.