when twelve is subtracted from three times a certain number and the number and the is divided by four, the answer is eighteen. find the number?

According to the question, we get the equation :

3x-12=18

⛈Let's find x :

Hope you understand

21 children

Step-by-step explanation: 6.50x+8.75y=259

This equation came from the cost of the tickets for the children and adults.

x+y=35

This comes from the group of 35 people that consists of children and adults.

We can use substitution to solve for x and y.

x=35-y

6.50(35-y)+8.75y=259

227.5-6.50y+8.75y=259

227.5+2.25y=259

2.25y=31.5

y=14

Now that we have found y, we can plug it into any of the equations to find x.

x+14=35

x=21

Therefore, there are 21 children and 14 adults in the group.