Question

a magazine has 60 pages of which 7/12 are used for advertising and 4/15 have only photographs on them and the rest are for article and stories . how many pages have article and stories on them?

Answer 1

Given,
Advertisement pages = 7/12

Photographs pages = 4/15

Total pages that do not have articles and stories = 4/15 + 7/12
$\frac{4}{15} + \frac{7}{12} \\ \\ taking \: lcm \: 60 \\ = > \frac{4}{15} \times \frac{4}{4} + \frac{7}{12} \times \frac{5}{5} \\ = > \frac{16}{60} + \frac{35}{60} \\ = > \frac{51}{60}$
so 51/60 pages don't have articles


So number of pages that don't have articles =
$\frac{51}{60} \times 60 \\ = > 51$
51 pages don't have articles


So pages that have aticles = 60 - 51

= 9


9 pages have articles and stories


Hope it helps dear friend ☺️✌️