Answer:
44 minutes
Explanation:
Make a proportion
There are 4 minutes of commercials for 11 minutes of programming, and 16 minutes of commercials for x minutes of programming
4/11=16/x
Cross multiply
4*x=11*16
4x=176
Divide both sides by 4
x=44
So, for 16 minutes of commercials, the program is 44 minutes long