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A store sells 25 hamburgers on the first day of its business. Every da
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27 Apr 2025, 08:13
27 Apr 2025, 08:13
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A store sells 25 hamburgers on the first day of its business. Every day thereafter, it sells 5 more hamburgers than the day before. If this trend continues for a month, then what is the number of hamburgers sold on the 31 st day?
(A) 160
(B) 175
(C) 190
(D) 205
(E) 220
(A) 160
(B) 175
(C) 190
(D) 205
(E) 220
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Re: A store sells 25 hamburgers on the first day of its business. Every da
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27 Apr 2025, 08:18
27 Apr 2025, 08:18
Expert Reply
The number of hamburgers sold can be written in the form of $\(25+(25+5 \times 1)+\ldots+(25+5 \times 30)\)$.
Therefore, the number of hamburgers sold on the 31 st day $\(=25+150=175\)$.
Thus, the correct option is $B$.
Therefore, the number of hamburgers sold on the 31 st day $\(=25+150=175\)$.
Thus, the correct option is $B$.
gmatclubot
Re: A store sells 25 hamburgers on the first day of its business. Every da [#permalink]
27 Apr 2025, 08:18
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