Sure, let's solve this step-by-step:
1. The weight of the first jar is given as 3 ounces.
2. The second jar weighs 1 ounce more than the first jar.
3. To find the weight of the second jar, we add 1 ounce to the weight of the first jar: \( 3 \text{ ounces} + 1 \text{ ounce} = 4 \text{ ounces} \).
4. Now, to find the total weight of the two jars, we add the weights of the first and second jars together: \( 3 \text{ ounces} + 4 \text{ ounces} = 7 \text{ ounces} \).
So, the total weight of the two jars is 7 ounces.