I think the answer is 7.725 so sorry if I’m wrong but see if that answer is correct
A=number of adult tickets
s=number of student tickets
so
total of 89 tickets sold
a+s=89
total collected was 1119
15a+11s=1119
so we have
a+s=89
15a+11s=1119
subsitution
a+s=89
minus s from both sides
a=89-s
subsitte 89-s for a in the other equation
15a-11s=1119
15(89-s)+11s=1119
1335-15s+11s=1119
1335-4s=1119
minus 1335 from both sides
-4s=-216
divide both sides by -4
s=54
subsitute back
a=89-s
a=89-54
a=35
35 adult tickets
54 student tickets
Answer:
30%
Step-by-step explanation:
If 2400$=100%
1680$=?
100×1680$÷2400$=70%
100%-70%=30%
So, the TV price decreasee by 30%.