SOLUTION: A 120-page book has p lines to a page. If the number of lines were reduced by three on each page the number of pages would need to be increased by 20 to give the same amount of wri

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Question 828032: A 120-page book has p lines to a page. If the number of lines were reduced by three on each page the number of pages would need to be increased by 20 to give the same amount of writing space. How many lines were there on the page originally?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
120*p=140*(p-3)
3*140=20p
3*7=p
21=p