It is currently 23 Oct 2017, 23:40

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# A lunar mission is made up of x astronauts and is formed fro

Author Message
TAGS:
Manager
Joined: 20 May 2014
Posts: 132
Followers: 5

Kudos [?]: 25 [0], given: 95

A lunar mission is made up of x astronauts and is formed fro [#permalink]  09 Oct 2017, 23:15
00:00

Difficulty:

5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
A lunar mission is made up of x astronauts and is formed from a total of 12 astronauts. A day before the launch the commander of the program decides to add p astronauts to the mission. If the total number of possible lunar missions remain unchanged after the commander’s decision, then which of the following cannot be the value of p?

(A) x

(B) x + 3

(C) 3

(D) 6

(E) 8

Kudos for correct solution.
[Reveal] Spoiler: OA
Intern
Joined: 09 Oct 2017
Posts: 2
Followers: 0

Kudos [?]: 1 [1] , given: 0

Re: A lunar mission is made up of x astronauts and is formed fro [#permalink]  10 Oct 2017, 06:39
1
KUDOS
from the problem one can infer that

12 C x = 12 C (x + p)

in such a case

either x = x + p
or 12 - x = x + p

A) x = x + x ---> x = 0
12 - x = x + x ---> x = 4 p = 4
B) x = x + x + 3 ----> x = -3 not possible
12 - x = x + x + 3 ---> 3x = 9 --> x = 3 p = 9
C) x = x + 3 ---> this equation can never be true
12 - x = x + 3 ---> 2x = 9 ---> x = 4.5. funny thing astronauts cannot be cut into half. SO this equatoin is also invalid

Re: A lunar mission is made up of x astronauts and is formed fro   [#permalink] 10 Oct 2017, 06:39
Display posts from previous: Sort by