Math

QuestionFind xx where the trampoline park cost (150+20x150 + 20x) equals the skating rink cost (175+15x175 + 15x).

Studdy Solution

STEP 1

Assumptions1. The trampoline park charges a booking fee of 150and150 and 20 for each person who attends. . The skating rink charges a booking fee of 175and175 and 15 for each person who attends.
3. We want to find the number of people, xx, for which the cost at both venues will be the same.

STEP 2

First, let's write down the cost function for each venue. The cost function is the total cost of having the party, which is the sum of the booking fee and the cost per person times the number of people.
For the trampoline park, the cost function isCtrampoline(x)=150+20xC_{trampoline}(x) =150 +20xFor the skating rink, the cost function isCskating(x)=175+15xC_{skating}(x) =175 +15x

STEP 3

We want to find the number of people, xx, for which the cost at both venues will be the same. This means we need to set the two cost functions equal to each other and solve for xx.
150+20x=175+15x150 +20x =175 +15x

STEP 4

To isolate xx, we can first subtract 150150 from both sides of the equation.
20x=175+15x15020x =175 +15x -150

STEP 5

implify the right side of the equation.
20x=25+15x20x =25 +15x

STEP 6

Next, subtract 15x15x from both sides of the equation to isolate xx.
20x15x=2520x -15x =25

STEP 7

implify the left side of the equation.
5x=255x =25

STEP 8

Finally, divide both sides of the equation by 55 to solve for xx.
x=25/5x =25 /5

STEP 9

Calculate the value of xx.
x=25/5=5x =25 /5 =5So,5 people must attend the party in order for the cost of having the party at the trampoline park and the skating rink to be the same.

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