Answer:
145.4%
Explanation:
Step 1: Write the data
Size of farm in 1940: 185 acres
Size of farm in 1941: 454 acres
Step 2: Calculate the percentage increase
Formula for percentage increase: (New-Previous)/Previous x 100
Percentage increase = (454-185)/185 x 100
Percentage increase = 145.4%
Therefore, the percentage increase is 145.4%.