A: the mean salary is $500.
400+500+600=1500/3=500
b: the median is $500 also.
Step-by-step explanation:

Answer:I think it 20 adult to 50 kids
Step-by-step explanation:
11. 57% = 0.57
12. retail price = c + (0.57c)
13. retail price = 45 + (0.57 x 45)
retail price = 45 + 25.65
retail price = $70.65
14. 57% was added to the original price of the chain which is $25.65