Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND EditionMembers of a social club met to address 280 newsletters. If they addressed 1/4 of the newsletters during the first hour and 2/5 of the remaining newsletters during the second hour, how many newsletters did they address during the second hour?
(A) 28
(B) 42
(C) 63
(D) 84
(E) 112
3/4 of the newsletters were not addressed during the first hour. 2/5 of those 3/4 newsletters were addressed during the second hour.
Newsletters addressed = 280*3/4*2/5 = 84
Option D
Difficulty level 550 is OK.
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