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A 60 page book has n lines per page. If n, the number of lines were reduced by 3, the number of pages go up by 10. The value of n is equal to


A) 30

B) 21

C) 18

D) 12

Correct Answer:
B) 21

Description for Correct answer:
\( \Large 70 \left(n-30\right) = 60n \)

=> \( \Large 70n-210 = 60n \)

=> \( \Large 10n = 210 \)

=. \( \Large n = 21 \)

Part of solved Polynomials questions and answers : >> Elementary Mathematics >> Polynomials




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