Chair Production 47C412
1. **State the problem:**
We need to find how many chairs of type A and type B can be produced given the cutting and assembly time constraints.
2. **Define variables:**
Let $x$ be the number of Chair A produced.
Let $y$ be the number of Chair B produced.
3. **Write the constraints as equations:**
Cutting time: $2x + y \leq 40$
Assembly time: $x + 2y \leq 35$
4. **Explain the constraints:**
- Each Chair A requires 2 hours cutting and 1 hour assembly.
- Each Chair B requires 1 hour cutting and 2 hours assembly.
- Total cutting time available is 40 hours.
- Total assembly time available is 35 hours.
5. **Find the maximum number of chairs that can be produced:**
We want to find integer solutions $(x,y)$ satisfying both inequalities.
6. **Solve the system by finding intersection points:**
From cutting time: $2x + y = 40 \Rightarrow y = 40 - 2x$
From assembly time: $x + 2y = 35 \Rightarrow x = 35 - 2y$
Substitute $y$ from first into second:
$$x = 35 - 2(40 - 2x) = 35 - 80 + 4x = -45 + 4x$$
Rearranged:
$$x - 4x = -45 \Rightarrow -3x = -45 \Rightarrow x = 15$$
Find $y$:
$$y = 40 - 2(15) = 40 - 30 = 10$$
7. **Check constraints:**
Cutting: $2(15) + 10 = 30 + 10 = 40 \leq 40$ (ok)
Assembly: $15 + 2(10) = 15 + 20 = 35 \leq 35$ (ok)
8. **Interpretation:**
The factory can produce 15 chairs of type A and 10 chairs of type B using all available cutting and assembly time.
**Final answer:**
$$\boxed{x=15, y=10}$$