Step 1: Problem
Each day you get a certain amount of minutes to play video games. you have already spent 9 minutes playing video games. if you have fewer than 27 minutes left to play what is the total amount of minutes you are allowed each day?
Step 2: Concept and Method
Time spent in playing video game = T
Time already spent = 9 minutes
Time left < 27 minutes
Total time allowed < 9 + 27
< 36 minutes