Answer:
number of students tickets = 80
number of adults tickets = 145
Step-by-step explanation:
Let
x = number of students tickets
y = number of adults tickets
x + y = 225 (1)
3x + 8y = 1400 (2)
From (1)
x = 225 - y
Substitute x = 225 - y into (2)
3x + 8y = 1400 (2)
3(225 - y) + 8y = 1400
675 - 3y + 8y = 1400
- 3y + 8y = 1400 - 675
5y = 725
y = 725/5
y = 145
Substitute y = 145 into (1)
x + y = 225 (1)
x + 145 = 225
x = 225 - 145
x = 80
number of students tickets = 80
number of adults tickets = 145
