Question

There are r rows of chairs with 15 chairs in each row. Write an expression that shows the number of chairs in all.

Answer 1

To find the total number of chairs, you multiply the number of rows by the number of chairs in each row. If there are \( r \) rows and 15 chairs in each row, the expression to represent the total number of chairs would be:

\[
\text{Total chairs} = r \times 15
\]

This can also be simplified to:

\[
\text{Total chairs} = 15r
\]

So, the expression showing the total number of chairs is \( 15r \).