Jenny read 12 pages on monday, 25 pages on tuesday and a couple of pages on wednesday. In the average, she read 23 oages per day during these 3 days. How many pages did she tead on wednesday?
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let pages readed on Wednesday be x
average = total pages / total days
23 = 12 + 25 + X / 3
23 * 3 = 12 + 25 + x
69 = 37 + X
69 - 37 = X
32 = x
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