Answer: in decimal form, 3/5=0.6 and 6/11=0.54. From this, we can tell that 3/5 is greater than 6/11. I believe this is what you mean by compare them, this is comparing their values.
sides 3.3 cm long
The average is the sum of the observations divided by the count.
So the sum of the observations is the count times the average.
So the 9 teachers together make 9(1000)=$9000 per week. The 20 staff (9 teachers + 11 aps) makes 20(1275)=25500.
So the 11 aps must make 25500-9000=16500
So the mean ap salary is 16500/11 =$1500 per week
Clearly management is where it's at.
Check: (1500*11+1000*9)/20 = 1275 good
Choice B