Answer:
5 / 12
Step-by-step explanation:
You must have common denominators in order to add or, in this case, subtract.
Answer: The required ratio is 1:1.
Step-by-step explanation:
Let the total number of CDs be 100
of CDs is given by

According to question,
of her Jazz CDs represents
of all her CDs.
Let the number of Jazz CDs be x
So, it becomes

So, Number of Jazz's CDs is 50
Number of Jazz non CDs is given by

Ratio of her CDs to her non- CDs is given by

Hence, the required ratio is 1:1.