For this case we can express the rates as:
[tex]\frac {2.40} {12} * \frac {dollars} {pen} = 0.2 \frac {dollars} {pen}[/tex]
Option A
[tex]\frac {12} {2.40} * \frac {pen} {dollars} = 5 \frac {pens} {dollar}[/tex]
Option C
If the pen package contains 12, then the cost of the package is $2.40.
Option B
Answer:
Option A, B, C
