Answer:
There are 8 adults in the group.
Step-by-step explanation:
Let the number of adults in the group be 'x'.
Given:
Number of children = 1
Number of adults = 'x'
Cost for a ticket of adult = $9
Cost for a ticket of a child = $6
Total cost = $78
Total cost is equal to total cost of tickets of 'x' adults plus cost of ticket of 1 child.
Unit cost of 1 adult × Number of adults + cost of ticket of 1 child = Total cost
Framing in equation form, we get:

<u><em>Adding -6 on both sides, we get:</em></u>

<u><em>Dividing both sides by 9, we get:</em></u>

Therefore, there are 8 adults in the group.
I may be wrong but I think a senior citizen ticket costs $8.00 and a student ticket costs $14.00
Hope I helped! :)
Answer:
x=1.3
Step-by-step explanation:
Answer:
416 x 5 = 2080
721 x 8 = 5768
5768 + 2080 = 7848. Have a great day.