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In a certain chess game, a single move will advance a player either 1,
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30 Mar 2022, 02:00
30 Mar 2022, 02:00
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Question Stats:
91% (00:29) correct
8% (00:26) wrong based on 12 sessions
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In a certain chess game, a single move will advance a player either 1, 3, or 4 spaces. What is the minimum number of moves required to advance 23 spaces?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
Part of the project: Skill Builder Project for a Q170
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
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Re: In a certain chess game, a single move will advance a player either 1,
[#permalink]
30 Mar 2022, 02:21
30 Mar 2022, 02:21
1
This is a maximize/minimize question.
The minimum number of moves would be to use the maximum number of spaces per move the maximum number of times. As soon as we have too few spaces to make this maximum number, we can decrease it accordingly.
We can use the 4 five times to get 4(5) = 20, then we can use 3 (one more move) to achieve 23. That is six total moves.
Put another way, our moves are 4, 4, 4, 4, 4, 3 for six total moves.
The answer is C.
The minimum number of moves would be to use the maximum number of spaces per move the maximum number of times. As soon as we have too few spaces to make this maximum number, we can decrease it accordingly.
We can use the 4 five times to get 4(5) = 20, then we can use 3 (one more move) to achieve 23. That is six total moves.
Put another way, our moves are 4, 4, 4, 4, 4, 3 for six total moves.
The answer is C.
gmatclubot
Re: In a certain chess game, a single move will advance a player either 1, [#permalink]
30 Mar 2022, 02:21
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