Answer:
53
Step-by-step explanation:
Let x be the number of children tickets sold and y be the number of adult tickets sold. Then
x+y=128.
The cost of x children tickets is $5.10x and the cost of y adult tickets is $9.70y, so
5.10x+9.70y =896.60.
From the first equation,
x=128-y,
then
53 adult tickets were sold.
Move all terms that don't contain
x
to the right side and solve.
=
20
−
2
y
x = 5
-3x = 15
---- ----
-3 -3
it is the first option
the middle (median)is 31 and where the Q starts is 26