Calculate Blind Prices: Scaling from 40x50 to 120x150 Measurements

To determine the price of the 120X150 roller blind, follow these steps:

• Step 1: Calculate the area of the first roller blind:
  The area of the 40X50 blind is $40 \times 50 = 2000 \, \text{cm}^2$.
• Step 2: Calculate the area of the second roller blind:
  The area of the 120X150 blind is $120 \times 150 = 18000 \, \text{cm}^2$.
• Step 3: Set up a proportion based on the two areas and the known price:
  $\frac{2000}{18000} = \frac{182}{\text{Price}_2}$
• Step 4: Solve for $\text{Price}_2$:
  $\text{Price}_2 = \frac{18000 \times 182}{2000}$
$\text{Price}_2 = \frac{3276000}{2000}$ $\text{Price}_2 = 1638$

Hence, the price of the 120X150 roller blind is \boxed{\1638} \).