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If N is a single digit integer and M>0, what is the value

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If N is a single digit integer and M>0, what is the value

by AAPL » Fri Nov 03, 2017 7:35 am
If N is a single digit integer and M>0, what is the value of M?

A) [33/99] - 0.01 rounded to nearest hundredths is P, where P=0.3N and N is the hundredths digit of P.

2. M=3.927N, where N is the ten thousandths digit of M.

The OA is C.

I don't have it clear. Please, can any expert assist me with this DS question? Thanks.
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Source: — Data Sufficiency |

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by Jay@ManhattanReview » Sun Nov 05, 2017 9:26 pm
AAPL wrote:If N is a single digit integer and M>0, what is the value of M?

A) [33/99] - 0.01 rounded to nearest hundredths is P, where P=0.3N and N is the hundredths digit of P.

2. M=3.927N, where N is the ten thousandths digit of M.

The OA is C.

I don't have it clear. Please, can any expert assist me with this DS question? Thanks.
A) [33/99] - 0.01 rounded to nearest hundredths is P, where P=0.3N and N is the hundredths digit of P.

We have [33/99] - 0.01 rounded to nearest hundredths is P, where P=0.3N

[33/99] - 0.01 = 1/3 - 0.01 = 0.323...

0.323... rounded to nearest hundredths = 0.32 = 0.3N

Thus, N = 2. But we have no information about M. Insufficient.

2. M = 3.927N, where N is the ten-thousandths digit of M.

We have no information about N; we cannot get M. Insufficient.

(1) and (2) combined:

We get M = 3.9272. Sufficient.

The correct answer: C

Hope this helps!

-Jay
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