karlfurt wrote:

I cant figure out how to solve this pb, especially in 1,5mn...

Thanks for your attention.

In a certain year the UN's total expenditures were 1.6 billion. Of this amount, 67,8 % was paid by the 6 highest-contributing countries, and the balance was paid by the remaining 153 countries. Was country X among the 6 highest-contributing countries?

1. 56% of the total expenditures was paid by the 4 highest contributing countries, each of which paid more than country X.

2. Country X paid 4.8 % of the total expenditures

appears (E) at first shot.

I. clearly insufficient. Doesnt tell us anything abt X. X can be the 5th or 6th one, or can be among the remaining 153

II. insufficient again. doesnt tell us whether X can be in top 6 or not. Imagine, each country in top 6 contributing 67.8/6, which is > 4.8 or imagine one country contributing 60% and then X can be among top 6. Not sufficient.

Combining doesnt make it any clear.

We have 11.8% to be divided among 2 countries. Its possible that 2 countries contribute 11.8/2 leaving X in thelot of 153, or one country contributing 7% and remaining by X (making it into top 6)

(E) is hte best choice.