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Bunuel
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Bunuel
The improvements in automobile braking technology, most notably ABS, have dramatically decreased the number of accidents at city intersections – in 2004, there were 155 such accidents, while the figure stands at 67 this year. Accidents at other places, which include all accidents on highways, rose from 16 percent of all accidents in 2004 to 34 percent this year. The accidents due to low visibility - occurring, for instance, during fog or rain, are up by three percent in the same period.

Which one of the following can be properly inferred from the passage?

A. As the number of accidents at intersections decreased, the overall number of accidents decreased too.
B. The number of accidents due to low visibility accounted for less percentage of overall accidents in 2004 than in this year.
C. The ABS technology is practically ineffective on highways.
D. If improvements in automobile braking technology continue for another decade, most accidents at intersections can be avoided.
E. Accidents at intersection made up a greater percentage of all accidents in 2004 than in this year.



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Hi it is written in the question 16% of 2004, and 34% this year. how can you take x in both cases, the total no of accidents will be different right
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Oppenheimer1945
There is a decrease in the number of accidents at city intersections –155 in 2004, while 67 this year.

Accidents at other places (not at intersections), which include all accidents on highways, rose from 16 percent of all accidents in 2004 to 34 percent this year. Pls note its in %.
if 2004 has 16x accidents, this year has 34x.

% of intersection accidents in 2004= 155/(155+16x)=a
% of intersection accidents this year=67/(67+34x)=b

a is always greater than b.

So E is the answer.
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I chose D as there was a trend where in increasing automobile breaking technology led to decreasing accidents at intersections. Therefore, D can be inferred.
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I was confused b/w option B& option D and after thinking long I realised - Option B can be negated basis this. In B % of accidents due to fog have increased and overall accidents have reduced. Overall accidents earlier were 155+ 16x and now are 67+34x
So there is no guarantee that 155 + 16x is less than or equal to 67+34x = infact 67+34x maybe greator and the 3% point up may still keep the overall uplift for accidents due to low visibility as same %
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Its simple.

City intersection = 155 -> 67
Highway = 16 % -> 34 %

There is nothing else

155 OF City intersection = 84 % total accident. then highway accidents will be close to 31 in 2004. Now 34 % increase close to 40 in current year of highway accident.
and 67 are city intersection accident
obviously, the now are close 62 % of total and have got decrease as % of total accident from 2004 of 84 %

You can find out each number in above equation
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