Final answer:
Mohamed sold 51 friend tickets and 21 non-friend tickets.
Step-by-step explanation:
To solve this problem, we can use a system of equations to represent the given information:
Let x be the number of tickets sold to friends.
Let y be the number of tickets sold to non-friends.
We can then set up two equations to represent the total number of tickets sold and the total amount of money made:
- x + y = 72 (equation 1)
- 3x + 5y = 258 (equation 2)
We can solve this system of equations using substitution or elimination. Let's use elimination. Multiply equation 1 by 3 to match the coefficients of x:
- 3x + 3y = 216 (equation 3)
- 3x + 5y = 258 (equation 4)
Subtract equation 3 from equation 4 to eliminate the x variable:
- 3x + 5y - 3x - 3y = 258 - 216
- 2y = 42
- y = 21
Substitute the value of y into equation 1 to solve for x:
- x + 21 = 72
- x = 51
Therefore, Mohamed sold 51 friend tickets and 21 non-friend tickets.