
Hanan N. answered 03/28/19
MD/ Engineer- Experienced Science and Mathematics Tutor
Let's start by identifying the variables and writing out two equations to make this easier.
A=Adult
S=Student
Eq#1: A+S= 200= Total tickets from both adults and students
Eq#2: 10A+6S= 1500= the price of adult tickets multiplied by the # of tickets sold and the price of student tickets multiplied by the number of tickets sold gives you the total cost of $1500.
Solve for either A or S in Eq#1. Here I will solve for A.
A= 200-S
Substitute the above into Eq#2:
10(200-S)+6S=1500
2000 - 10S+6S=1500
2000-4S=1500
-4S=-500
S=125 student ticktes
Substitute S in the equation to find A.
Eq#1: A+S= 200
A+125=200
A=75 Adult tickets
Now that we know how many of each ticket we have we can simply multiply.
75 adult tickets * $10= $750
125 student tickets *$6= 750
And just to check if our math is correct:
$750 +$750= $1500 which is as seen in the question stem
75 adult tickets + 125 student tickets= 200 tickets as seen in the question stem
Hope this helps!