Let the number of child tickets sold be x, and number of adult tickets be y, then
5.70x + 9.50y = 543.40 . . . (1)
y = 2x . . . (2)
Putting (2) into (1), gives
5.7x + 9.5(2x) = 543.4
5.7x + 19x = 543.4
24.7x = 543.4
x = 543.4/24.7 = 22
Therefore, 22 child tickets were sold.
This equation works for 3x+11 over 2
(3x + 11) /2 = -2
(3x + 11) = 4
3x = -7
x = 2.3333(repeating) or 2 1/3
Answer:
11
Step-by-step explanation:
duh add 1 and 1 merge it together to get 11
