In a country the total population is 50 million and they are distribut

What is the source of this question?My friend got this question in his GMAT today.

Since there are 50 million people and M has 21% of them, M has:

0.21 x 50 million = 10.5 million people

Since the number of people in N is between the number of people in M and P, N has between 2 million and 10.5 million people. Since we want to maximize the number of people in N, we want to minimize the number of people in J, K, and L such that each has at least the number of people in M, or 10.5 million. Thus, we can say that J, K, and L have 10.5 million people each; if we add to that the 10.5 million and 2 million people in M and P, respectively, we have 10.5 x 4 + 2 = 44 million people in J, K, L, M, and P combined. Thus, the maximum number of people in N is:

50 - 44 = 6 million

Answer: B

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