A group of adults plus one child attend a movie at Cineplex 15 tickets cost nine dollars for adults and six dollars for children the total cost for the movie $78 right and equation to find the number of adults in the group

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:

Adding -6 on both sides, we get:

Dividing both sides by 9, we get:

Therefore, there are 8 adults in the group.

x = 23.78

step-by-step explanation:

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