Mathematics, 30.07.2020 14:01, mclendenen8011

In a class of 80 students, every student had to study mathematics or biology or both mathematics and biology ,If 65 students studied mathematics and 62.5% of teh class studies biology ,how many students studied both subjects. pls detial properly

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In a class of 80 students, every student had to study mathematics or biology or both mathematics and...