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Weekly Revenue Per Product Category at Office Supply Store X
[#permalink]
29 Aug 2018, 16:23
29 Aug 2018, 16:23
Expert Reply
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Question Stats:
80% (01:15) correct
19% (01:00) wrong based on 56 sessions
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| Product Category | Weekly Revenue |
| Pens | $164 |
| Pencils | $111 |
| Legal pads | $199 |
| Erasers | $38 |
| Average (arithmetic mean) of categories above | $128 |
According to the chart above, the average (arithmetic mean) 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?
(A) $130
(B) $131
(C) $132
(D) $164
(E) $176
Re: Weekly Revenue Per Product Category at Office Supply Store X
[#permalink]
30 Aug 2018, 00:10
30 Aug 2018, 00:10
1
Prior change the average is 128 for 4 products. Hence total sum = 128*4 = 512
However, there was a mistake $12 should be added to make the new sum 524 and the new average = 524/4 = $131
However, there was a mistake $12 should be added to make the new sum 524 and the new average = 524/4 = $131
Re: Weekly Revenue Per Product Category at Office Supply Store X
[#permalink]
10 Sep 2021, 05:07
10 Sep 2021, 05:07
1
total sum according to the chart is = 128*4 = $512
Instead of $164, it will be $176 for pens.
So, 512 - 164 + 176 = 524
Correct average is = 524 / 4 = 131 (B)
Instead of $164, it will be $176 for pens.
So, 512 - 164 + 176 = 524
Correct average is = 524 / 4 = 131 (B)
