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In a newspaper, it was reported that the number of yearly robberies in Springfield in 2010 was 150 , and then went down by 
50% in 2011 . How many robberies were there in Springfield in 2011?
Answer:

In a newspaper, it was reported that the number of yearly robberies in Springfield in 20102010 was 150150 , and then went down by 50% 50 \% in 20112011 . How many robberies were there in Springfield in 20112011?\newlineAnswer:

Full solution

Q. In a newspaper, it was reported that the number of yearly robberies in Springfield in 20102010 was 150150 , and then went down by 50% 50 \% in 20112011 . How many robberies were there in Springfield in 20112011?\newlineAnswer:
  1. Identify Initial Number: Identify the initial number of robberies in Springfield in 20102010.\newlineThe reported number of yearly robberies in Springfield in 20102010 was 150150.
  2. Calculate Decrease: Calculate the decrease in the number of robberies in 20112011.\newlineThe robberies went down by 50%50\% in 20112011. To find the decrease, we calculate 50%50\% of 150150.\newlineDecrease = 50%50\% of 150150 = 0.50×1500.50 \times 150
  3. Perform Calculation: Perform the calculation to find the decrease in the number of robberies. Decrease = 0.50×150=750.50 \times 150 = 75 robberies
  4. Calculate Number in 20112011: Calculate the number of robberies in Springfield in 20112011.\newlineTo find the number of robberies in 20112011, subtract the decrease from the number of robberies in 20102010.\newlineNumber of robberies in 20112011 = 15075150 - 75
  5. Perform Subtraction: Perform the subtraction to find the final number of robberies in 20112011.\newlineNumber of robberies in 20112011 = 15075=75150 - 75 = 75 robberies