Ayoo someone help its kinda ✨confusing✨

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?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents