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Re: Of the 200 numbers, 16.5% are greater than 40, and 33.3% of the number [#permalink]
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In my opinion, the fact that there are 200 numbers is irrelevant. We can deduce the median just by working with the percentages.

We're given that:
- 16.5% of the 200 numbers are greater than 40
- 33.3% of the numbers greater than 35 are greater than 40

Combining the 2 statements:
- 33.3% of the numbers greater than 35 are 16.5% of the 200 numbers

So, 100% of the numbers greater than 35 are 49.5% of the 200 numbers

Since the median is at the 50% mark when the numbers are arranged in order, and since 49.5% are greater than 35, then the median must be less than or equal to 35.

Answer: D
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Re: Of the 200 numbers, 16.5% are greater than 40, and 33.3% of the number [#permalink]
Expert Reply
DeeptiM wrote:
Of the 200 numbers, 16.5% are greater than 40, and 33.3% of the numbers greater than 35 are greater than 40. Which of the following could be the median number?

I. 34
II. 35
III. 36

(A) I only
(B) II only
(C) III only
(D) I and II
(E) I and III

I get till this part...200*0.165=x*0.333 =>x=99

Can someone help me with next steps??


Solution:

We see that 0.165 x 200 = 33 numbers are greater than 40. We are given that 33.3% or 1/3 of the numbers greater than 35 are also greater than 40. If we let n = the number of numbers of greater than 35, we can create the equation:

1/3 * n = 33

n = 99

Therefore, there are 99 numbers greater than 35. That is, the 102nd to the 200th number (after the numbers are sorted in ascending order). Since the median of 200 numbers is the average of the 100th and 101st numbers, the median must be less than or equal to 35.

Answer: D
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Re: Of the 200 numbers, 16.5% are greater than 40, and 33.3% of the number [#permalink]
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