Question

A book has 70 pages with 30 lines of printing matter on each page. If each page is to have only 20 lines of printing matter how many pages wil the book have

Answer 1

Approx 47 Pages......

Answer 2

30 lines are to be printed on 70 pages

1 line is to be print on 70/30 pages

20 lines are to be print on

$\frac{70}{30} \times 20 \\ \\ = \frac{140}{3} \\ \\ = 46.66$

or ≈ 47 pages