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03 Jun 2019, 01:55
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:41) correct
22%
(01:51)
wrong
based on 68
sessions
History
Date
Time
Result
Not Attempted Yet
Weekly Revenue Per Product Category at Office Supply Store X
According to the chart above, the average revenue per week per product category is $128. However, there is an error in the chart; the revenue for Pens is actually $176, not $164. What is the new, correct average revenue per week per product category be, in dollars?
(A) 130
(B) 131
(C) 132
(D) 164
(E) 176
2019-06-03_1253.png [ 30.28 KiB | Viewed 2420 times ]
According to the chart above, the average revenue per week per product category is $128. However, there is an error in the chart; the revenue for Pens is actually $176, not $164. What is the new, correct average revenue per week per product category be, in dollars?
(A) 130
(B) 131
(C) 132
(D) 164
(E) 176
Attachment:
2019-06-03_1253.png [ 30.28 KiB | Viewed 2420 times ]
Mo2men
Joined: 26 Mar 2013
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03 Jun 2019, 02:09
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Bunuel
This problem could be solved without calculation. Just utilize the unit digit concept.
New sum = 176 + 111 +199 +38 = ....4
....4 = 4 * new average (the multiplication must yield unit digit of 4)
Scan answer choices, only B & E. But E is 176 which is impossible.
Answer: B
Reduced calculation :
The increase is revenue from the error is 12$. This increase is to be again divided by all four categories then added to the existing/wrong average. so 12/4 = 3$ increase in average. 128$+3$ = 131. Option B
The increase is revenue from the error is 12$. This increase is to be again divided by all four categories then added to the existing/wrong average. so 12/4 = 3$ increase in average. 128$+3$ = 131. Option B
