Answer:
207 robberies
Step-by-step explanation:
To find 50% of a number, we will simply multiply that number by 50%. To do so, we first convert 50% to a decimal.
When converting a percent to decimal, simply add a decimal point to the end of the number, then move it 2 places to the left.
50. → .50
Now we multiply:
138 x .50 = 69
So we know that 50% of 138 = 69
Now we just add that number to our original number in order to find what it would be with a 50% increase
138+ 69 = 207
So there were 207 robberies in 2012
