Answer:
240 students
Step-by-step explanation:
Grade 7 : Grade 8 = 5 : 3
Number of seventh grade students = 5x
Number of Eighth grade students = 3x
3x = 90
x = 90÷3
x = 30
Total students = 5x + 3x = 8x = 8 * 30 = 240
The total cost of 6 wave pool tickets with the discount included would be $73.5.
<h3>How to calculate the total value of 6 tickets with the discount?</h3>
To calculate the total cost we must multiply the value of each ticket by the number of tickets to be purchased, in this case there are 6:
Learn more about tickets in: brainly.com/question/14001767
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You would multiply the growth rate (.009) by 2/3 to get the percent rate per year. Therefore, the answer is .006