Mathematics · Averages
There are two sections of a library consisting of 48 and 64 book racks. The overall average number of books per rack is 75. If the average number of books per rack in the first section containing 48 racks is 55, what is the average number of books per rack in the second section of the library?
- 172
- 294
- 390✓
- 465
Correct answer
90
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