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
[spoiler]OA=D[/spoiler]
Source: Official Guide
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Members of a social club met to address 280 newsletters. If they addressed 1/4 of the newsletters during the first hour
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deloitte247
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Total newsletter = 280
During the first hour, they addressed 1/4 of total newsletters
=> 1/4 * 250 = 70 newsletters
After the first hour, newsletters remain => 280 - 70 = 210
During the second hour, they addressed 2/5 of the remaining newsletters
=> 2/5 * 210 = 2 * 42
=>84 newsletters
Answer = D
During the first hour, they addressed 1/4 of total newsletters
=> 1/4 * 250 = 70 newsletters
After the first hour, newsletters remain => 280 - 70 = 210
During the second hour, they addressed 2/5 of the remaining newsletters
=> 2/5 * 210 = 2 * 42
=>84 newsletters
Answer = D
