Answer :
The number of books the school should order is; 1222.2 books
Ratios and statistical evaluation
According to the question;
- 55 of 90 students said that they would definitely buy a yearbook.
On this note, if the school has a total of 2000 students, it follows that;
- 55/90 = x/2000
By cross product; it follows that;
- 90x =2000×55
- 90x = 110,000
- x = 110000/90
x = 1222.2 books
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