Answer: The boys made up 6b of the original class.
Step-by-step explanation:
Answer:
5.3
Step-by-step explanation: dived 32 by 6
Answer:
68
Step-by-step explanation:
Let x=adult tickets and y=child tickets
1) 15x+11y=1889
2) x+y=147
multiply equation 1 by -1/11 on both sides to get:
-(15/11)x-y=-171.73
add new equation with equation 2 to get
-4/11x=-24.73
Isolate x to get:
x=67.99999
Round up to get 68 adult tickets
Sum means we are adding. 1 + y has to be greater than or equal to 5, therefore,
