Respuesta :
Solution:
Total Number of CD's=215 classical CD's + 125 jazz CD's, and 330 soft rock CD's
=215+125+330
=340+330
=670 CD's
Number of CD's that Julia want to place in each group = 5 CD's
There are two ways in which 5 CD's can be placed in a group, either 5 CD's in a row or 5 CD's in a Column.
Let number of rows that contain 5 CD's in a group in the shelf = x
And, Number of Columns which contain 5 CD's in a group in the shelf= y
Equation containing number of groups containing 5 CD's can be written as
→5 x=670
OR
→5 y= 670
Total number of groups in either case will be
[tex]=\frac{670}{5}\\\\=154[/tex]