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ppravin88
At the end of year X, automobile installment credit accounted for 36% of all outstanding consumer installment credit. At that time automobile finance companies extended $57 billion of credit, or 1/3 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time?

A. 62
B. 171
C. 475
D. 513
E. 684

$57 billion of credit, or 1/3 of the automobile installment credit.
Implication:
The automobile installment credit is a positive INTEGER.

Automobile installment credit accounted for 36% of all outstanding consumer installment credit.
How many billion dollars of consumer installment credit was outstanding at that time?

36% = 36/100 = 9/25
Since 9/25 of the correct answer must yield an integer value for the automobile installment credit, the correct answer must be a MULTIPLE OF 25.
Only C is viable.

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