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02 Jan 2018, 01:27
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
70% (02:25) correct
30%
(02:33)
wrong
based on 244
sessions
History
Date
Time
Result
Not Attempted Yet
A store currently charges the same price for each shirt it sells. If the current price of each shirt were to be decreased by $2, 10 more shirts could be bought for $315. What is the current price of each shirt?
A. $6
B. $7
C. $9
D. $10
E. $12
A. $6
B. $7
C. $9
D. $10
E. $12
02 Jan 2018, 07:32
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Bunuel
The figure $315 and the answer choices are a big cue: use divisibility rules.
There cannot be partial shirts. $315 must be divisible by the cost per shirt.
That rules out A, D, and E.
A) $6. $315 must be divisible by 2 and 3. It not divisible by 2, hence not divisible by 6. REJECT
D) $10: $315/$10 = 31.5 shirts. OR: $315 does not end in 0. (Not an even number divisible by 5, not divisible by 2 and 5.) REJECT
E) $12: $315 must be divisible by 6 and 2. From above, $315 is not divisible by 6. REJECT
That leaves B and C.
Try C) $9
$315/$9 = 35 shirts
Price decreases by $2
($9 - $2) = $7
$315/$7 = 45 shirts = 10 more shirts if price is $7
Answer C
General Discussion
03 Jun 2020, 20:21
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