children tickets = 7
adult tickets = 5
a+c=135.5
14.5+c=135.5
14.5x7=72.5
135.5-72.5= 63
c=63
Answer:
(5 , 7)
Step-by-step explanation:
let a = the number of adult tickets
let c = the number of children tickets
then we have to solve the following system
a + c = 12
14.5a + 9c = 135.5
we proceed by Substitution:
c = 12 - a
After some calculations we find
a=5 and c=7
B. 25
10+6=16
if it is proportional, then it would be 25 to get 15.
the 6x element as there is no solution in integers.
