Answer:
adults, a = 116
Students, s = 111
Teacher, t = 53
Step-by-step explanation:
Adult = $6
Teacher = $4
Students = $2
Let
Adults = a
Teacher = t
Students = s
Total revenue = $1010
Total tickets sold = 280
a = 2t - 10
a + s + t = 280
6a + 2s + 4t = 1010
Substitute a = 2t - 10 into the equation
2t - 10 + s + t = 280
6(2t - 10) + 2s + 4t = 1010
3t + s - 10 = 280
12t - 60 + 2s + 4t = 1010
3t + s = 280 + 10
16t + 2s = 1010 + 60
3t + s = 270 (1)
16t + 2s = 1070 (2)
Multiply (1) by 2
6t + 2s = 540 (3)
16t + 2s = 1070 (4)
Subtract (3) from (4)
16t - 6t = 1070 - 540
10t = 530
Divide both sides by 10
t = 530/10
= 53
t = 53
Substitute t =53 into (1)
3t + s = 270
3(53) + s = 270
159 + s = 270
s = 270 - 159
= 111
s = 111
Substitute the values of s = 111 and t = 53 into
a + s + t = 280
a + 111 + 53 = 280
a + 164 = 280
a = 280 - 164
= 116
adults, a = 116
Students, s = 111
Teacher, t = 53