In a newspaper, it was reported that the number of yearly robberies in Springfield in 2010 was 164, and then went down by 50% in 2011. How many robberies were there in Springfield in 2011?

Answer 1

To find the number of robberies in Springfield in 2011 after a decrease of 50% from the 2010 figures, we can follow these steps:

1. Start with the number of robberies in 2010, which was 164.

2. Calculate 50% of 164:

   \[ 50% \text{ of } 164 = 0.5 \times 164 = 82 \]

3. Subtract this decrease from the 2010 number:

   \[ \text{Robberies in 2011} = 164 - 82 = 82 \]

Thus, the number of robberies in Springfield in 2011 was 82.