Answer:

Ryan would like to eat <em>more than</em> 50 carbs per day, but <em>no more than</em> 150 carbs per day. 
So, Ryan's total carb intake must be <em>between </em>50 and 150 carbs. 
Step-by-step explanation:
So he wants to keep his consumption of carbs between the inequalities: 

So, let's solve both inequalities. 
1) 

Subtract 10 from both sides: 

Divide both sides by 2: 

2) 

Subtract 10 from both sides: 

Divide both sides by 2: 

So, our inequality is now: 

Since we solved the equations: 

Written as a compound inequality, this is: 

In other words, Ryan would like to eat <em>more than</em> 50 carbs per day, but <em>no more than</em> 150 carbs per day. 
So, Ryan's total carb intake must be <em>between </em>50 and 150 carbs.