1. **Find the value of $X$ in the opposite Bar Model** - According to the problem, the total length of the bar model is the sum of the two sections: one labeled $X$ with value 4210, and the other with value 7620. - Since $X$ is given as 4210, no calculation is needed. The value of $X$ is simply 4210. 2. **Solve for $A$ in the equation $525 + A = 900$** - Start with the equation: $525 + A = 900$ - To find $A$, subtract 525 from both sides: $$A = 900 - 525$$ - Calculate the right-hand side: $$A = 375$$ 3. **Find how many pieces were sold during the rest of the day** - Total pieces sold in one day: 1232 - Pieces sold in the morning: 876 - To find the pieces sold during the rest of the day, subtract morning sales from total sales: $$\text{Rest of day} = 1232 - 876$$ - Calculate: $$\text{Rest of day} = 356$$ **Final answers:** - $X = 4210$ - $A = 375$ - Pieces sold during the rest of the day $= 356$