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
The most simplest way to explain this is by breaking down the 60%.
Think about it.
If 60% space = 30 bikes
then 30% space = 15 bikes
then 10% space must be 5 bikes.
So we now know for sure 60% space = 30 bikes.
And 10% space = 5 bikes.
Then we know remaining 40% space = 20 bikes.
So total space = 100% space, for 50 bikes.
-3 times -3=9
9-(-3)=9+3
9+3=12
Hope this helps and please give brainliest!
Answer: its D
Step-by-step explanation:
700, hope that helped you! have a good day
