1. **State the problem:** If 1.5 chickens lay 1.5 eggs in 1.5 days, how many eggs does 1 chicken lay in 3 days? 2. **Understand the problem:** We want to find the egg-laying rate per chicken per day, then use it to find how many eggs 1 chicken lays in 3 days. 3. **Calculate the rate per chicken per day:** - Total eggs laid by 1.5 chickens in 1.5 days = 1.5 eggs - Eggs per chicken in 1.5 days = $\frac{1.5}{1.5} = 1$ egg - Eggs per chicken per day = $\frac{1}{1.5} = \frac{2}{3}$ eggs 4. **Calculate eggs laid by 1 chicken in 3 days:** - Eggs in 3 days = $\frac{2}{3} \times 3 = 2$ eggs **Final answer:** 1 chicken lays 2 eggs in 3 days.