Critical Reasoning (CR) | Re: In 1990 major engine repairs were performed on 10 percent of the cars

Here is the OE from Kaplan:

When asked to explain a discrepancy in the stimulus, the first step is to locate the discrepancy. The unusual thing in the situation described is that a smaller percentage of the older cars had engine work done. One might think that a greater percentage of older cars would need repairs, but notice that the stimulus refers to which automobiles had repairs, not which needed them. If the cars from the 1960s are probably in more need of repair, why have a greater percentage
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