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# In western Europe, x bicycles were sold in each of the years 1990 and

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Joined: 23 Jul 2019
Posts: 188
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In western Europe, x bicycles were sold in each of the years 1990 and  [#permalink]

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07 Oct 2019, 20:40
EMPOWERgmatRichC wrote:
Hi All,

While this question is wordy, it can be solved by taking the proper notes and TESTing VALUES.

We're told that X bicycles were sold in each of the years 1990 and 1993.

IF.... X = 100

100 bicycles sold in 1990
100 bicycles sold in 1993

Next, we're told that the producers had a 42% share of the market in 1990 and a 33% share of the market in 1993....

1990 share = 42% of 100 = 42 bicycles
1993 share = 33% of 100 = 33 bicycles

We're asked for the DECREASE in the NUMBER of bicycles sold by those producers from 1990 to 1993. That number is 42 - 33 = 9, so we're looking for an answer that equals 9 when we place X = 100 into the answer choices. There's only one answer that matches...

GMAT assassins aren't born, they're made,
Rich

I came up with the same approach when I saw this question for the first time, however, I still doubted my answer.
What I don't get is why it only works when plugging in 100.

Because if we say the market consists of 1000 bicycles then we would have a much larger %-decrease.
420 -> 330 (90 decrease in absolute number)

90/420 ~ 1/5

Can someone point out why my reasoning is flawed?

Much appreciation!
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Re: In western Europe, x bicycles were sold in each of the years 1990 and  [#permalink]

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08 Oct 2019, 10:43
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Hi chrtpmdr,

You will still get the correct answer if you change the value of X... as long as you are answering the question that is ASKED.

IF... X = 1000, then the respective share of bicycles sold will become 420 and 330. The DECREASE then becomes 420 - 300 = 90... so we're looking for an answer that equals 90 when you plug X=1000 into it. That's still Answer

As an aside, 9/42 is the same as 90/420, but that was NOT what the question asked us for.

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In western Europe, x bicycles were sold in each of the years 1990 and  [#permalink]

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20 Jun 2020, 08:47
ahmer wrote:
It was wordy for me at first !

but upon reading it carefully, it says, In Western Europe, x bicycles were sold each in 1990 and 1993"

which means total bicycles sold in Western Europe (x) = [Bicycles sold by Western Europe Manufacturers] + [Bicycles sold by all other manufacturers]

And then it goes on to ask only about Western Europe manufacturers and giving their percentages for the corresponding years.

It actually took me 5-10 minutes because I wasn't paying too much attention at the meaning and was rushing through the problem.

This post is for anyone who had the same problem as me.

Thanks

This is spot on!

You almost kinda read past this minor detail.....

Because the question makes the distinction between who produces, and who sells in the jurisdiction on Western Europe.

Hence, asking for the difference of who produced AND sold in Western Europe (which immediately narrows it down by taking out the external producers), allows you to simply take the % difference from the 2 years, with the x bicycles sold as the constant!

Tricky tricky
In western Europe, x bicycles were sold in each of the years 1990 and   [#permalink] 20 Jun 2020, 08:47

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