A casino uses chips in $5 and $7 denominations only. Which of the following amounts CANNOT be paid out using these chips

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AAPL wrote:
Thu Mar 11, 2021 10:43 am
Manhattan Prep

A casino uses chips in $5 and $7 denominations only. Which of the following amounts CANNOT be paid out using these chips?

A. $31
B. $29
C. $26
D. $23
E. $21

OA D
We can quickly get the answer by eliminating four of the answer choices

(A) $31 = 2($5) + 3($7). ELIMINATE A
(B) $29 = 3($5) + 2($7). ELIMINATE B
(C) $26 = 1($5) + 3($7). ELIMINATE C
(D) $23 =
(E) $21 = 3($7). ELIMINATE E

Answer: D

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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