Borrowed book

Jane must, as soon as possible, return a borrowed book. She figured that reading 15 pages a day return the book in time. Then she read 18 pages a day and then returned the book one day before. How many pages should a book have?

Correct answer:

p =  90

Step-by-step explanation:

15d=p 18(d1)=p  15 d=p 18 (d1)=p  15dp=0 18dp=18  Pivot:Row1Row2 18dp=18 15dp=0  Row21815 Row1Row2 18dp=18 0.17p=15  p=0.1666666715=90 d=1818+p=1818+90=6  d=6 p=90



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