Answer:
700
Step-by-step explanation:
1 meter = 100 cm
7x100=700cm
X = advance
y= same day
x+y=70
30x+15y=1650
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30x+15y=1650
- x+y=70 (x15) -> 15x+15y=1050
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30x+15y=1650
-15x+15y=1050
--------------------------
15x=600
x=600/15
x=40
so now u can insert the price of x AKA the price of the advanced ticket to find our the price of the same day ticket.
x+y=70
so
40+ y=70
y=70-40
y=30
x = advance =40
y= same day =30
The answer should just be 3pi/5
The manager already hired 9 people. Let 
be the number of people he still can hire. Since these people will add to the 9 he already hired, when the hiring campaign will be over he will have hired 
people. We know that he can't hire more than 14 people, so the number of people hired must be less than or equal to 14:
If we subtract 9 from both sides, we have
so, the manager can hire at most 5 other people
