1. The problem states that a cooking workshop started at 10:00 and ended at 13:00. 2. We need to find how many sessions of length $\frac{3}{4}$ hours fit into the total duration. 3. Calculate the total duration of the workshop: $$13:00 - 10:00 = 3 \text{ hours}$$ 4. Each session lasts $\frac{3}{4}$ hours. 5. To find the number of sessions, divide the total time by the session length: $$\text{Number of sessions} = \frac{3}{\frac{3}{4}} = 3 \times \frac{4}{3} = 4$$ 6. Therefore, there were 4 sessions in the workshop.