Question

Of the fifth grade students 15/20 went to the book fair.Of the students who went to the book fair,12/16 bought at least one book.What fraction of fifth grade students bought at least one book

Answer 1

Answer:

$\frac{9}{16}$

Step-by-step explanation:

Let total number of students$=x$

Students went to the book fair:

Students went to book fair$=\frac{15}{20}\times total\ number\ of\ students=\frac{15}{20}x$

Students who bought book:

$Students\ who\ bought\ book=\frac{12}{16}\times Number\ of\ students\ went\ to\ book\ fair=\frac{12}{16}\times \frac{15}{20}x=\frac{9}{16}x$

Hence $\frac{9}{16}$ of total students bought at least one book.