Approximately how many red candies will be in the packages?

This one is kinda tricky, 

So if we look at the clues, 1 and 2 represent red candies. 

We need to think like a computer here, if we were scanning a bar code with our laser eyes and we see 1s and 2s as favorable in this case, we would see 5 favorable codes (there are 3 "1s" and 2 "2s"), 

Therefore the answer should be 5. 

Hope this helped.

n = 20

Step-by-step Explanation:
When dealing with ratios, there is always most likely a second number given to you. This number is going to be 1.
When looking for n, you have to look for all of the numbers, in this case there is only two.
1 is the hour, so now you just need the 20 minutes.
If the ratio is 1:n, this means that n would have to equal 20.
1:20