Final answer:
To find the number of quarters produced in 2012, we can use the given information and percentage increase. Solving the equation, we find that approximately 357.7 million quarters were produced in 2012.
Step-by-step explanation:
To find the number of quarters produced in 2012, we need to solve the equation:
2013 million quarters = 1455 million quarters + (156% increase) x (number of quarters produced in 2012)
First, we convert the percentage increase to a decimal: 156% = 156/100 = 1.56
Next, we rearrange the equation to find the number of quarters produced in 2012:
Number of quarters produced in 2012 = (2013 million quarters - 1455 million quarters) / 1.56
Calculating the result:
Number of quarters produced in 2012 = (558 million quarters) / 1.56 = 357.7 million quarters
Therefore, approximately 357.7 million quarters were produced in 2012.