Describe the relationship among the four terms

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys