To find out how many weeks it will take Jason to collect coins from all 195 countries, we can set up the following equation based on the information provided.
- Current number of countries Jason has: 99
- Total number of countries: 195
- Number of countries Jason plans to add each week: 4
First, we need to determine how many additional countries Jason needs to collect:
\[ \text{Additional countries needed} = 195 - 99 = 96 \]
Next, we can set up the equation to find out how many weeks (w) it takes to add these 96 countries at the rate of 4 new countries per week:
\[ 4w = 96 \]
Now, we can solve for w:
\[ w = \frac{96}{4} \]
\[ w = 24 \]
So it will take Jason 24 weeks to collect coins from all 195 countries.
Final Answer: 24 weeks