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azamat
3 years ago
12

a 120 page book has p lines to a page. if the number of lines were reduced by 3 on each page the number of pages would need to b

e increased by 20 to give the same amount of writing space. how many lines were there on the page originally?? pls help <3
Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Answer: 21

Explanation:

Space on book with p lines per page

= 120p

Amount of space needed to give the same space as initial

= 140(p - 3)

= 140p - 420

Hence we can form the equation:

140p - 420 = 120p

20p = 420

<u>p</u><u> </u><u>=</u><u> </u><u>2</u><u>1</u>

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