When paying off credit card debt, it is best to pay off cards first. low balance, high interest low balance, low interest high balance, low interest high balance, high interest

The answer is option A - low balance, high interest

Step-by-step explanation:

When paying off credit card debt, it is best to pay off low balance, high interest cards first.  

A person should consider these two basic ways to pay off credit cards - First is he should either pay off the credit card with the highest interest rate or secondly he should consider paying for the one with the lowest balance first.  

One should have a clear opinion of what he wants. Like whether a person wants to save money on interest or he wants to get rid of entire credit card balances quickly.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads