At the end of year X, automobile installment credit accounted for 43% of all outstanding consumer installment credit. At that time automobile finance companies extended $50 billion of credit, or 1/4 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time?
Choices: A) 450 B) 465.12 C) 475 D) 500.15 E) 200
System of Equations   a = (43/100) c   (1/4) a = 50 --&gt; a = 200   Substitution   200 = (43/100) c   c = (100/43) 200   Calculate   200/43 * 100   - The the correct answer is 465.12. The correct answer is 465.12.
<result>B</result>
At the end of year X, automobile installment credit accounted for 43% of all outstanding consumer installment credit. At that time automobile finance companies extended $50 billion of credit, or 1/4 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time?