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Difficulty: Sub 505 Level,   Fractions and Ratios,   Word Problems,                        
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Re: Members of a social club met to address 280 newsletters. If [#permalink]
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During first hour,letters addressed=280*1/4=70
Remaining=280-70=210
During second hour=210*2/5=42*2=84
Ans.D
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Re: Members of a social club met to address 280 newsletters. If [#permalink]
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Members 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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Re: Members of a social club met to address 280 newsletters. If [#permalink]
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in the first hour => 1/4*280=>70
left =210
in the second hour => 2/5*210=84
Smash D
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Re: Members of a social club met to address 280 newsletters. If [#permalink]
In the first hour they addressed : 280/4 = 70.
In second hour they addressed: ((280 - 70) / 5) * 2
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Re: Members of a social club met to address 280 newsletters. If [#permalink]
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Re: Members of a social club met to address 280 newsletters. If [#permalink]
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