Jesse made 20 ounces of trail mix by mixing granola and peanuts the ratio of peanuts. The granola is the trail mix is 1:4. How many ounces of granola are in the trail mix?

The ratio of granola and penuts si 1:4, this means that for each once of peanuts there will be 4 ounces os granola so in a total of 20 ounces we will have:
[tex]1\colon4\to2\colon8\to3\colon12\to4\colon16[/tex]and the sum of 16 plus 4 is equal to 20 so we have 4 ounces of peanuts and 16 ounces of granola
So the answer is D 16 ounces of granola