To solve this system of equations, we can substitute the value of y from the second equation into the first equation:
x + (2x - 5) = 28
Combining like terms:
3x - 5 = 28
Adding 5 to both sides of the equation:
3x = 33
Dividing both sides by 3:
x = 11
Now we can substitute the value of x back into the second equation to find y:
y = 2(11) - 5
y = 22 - 5
y = 17
Therefore, Jennifer sold 11 boxes of cookies and Marci sold 17 boxes of cookies.
x + y = 28
y = 2x - 5
y = Marci; x = Jennifer
Jennifer and Marci are selling cookies for a fundraiser. They sold 28 boxes of cookies together. Marci sold 5 less than twice the number that Jennifer sold. How many boxes of cookies did each girl sell? Use system of equations to solve the problem.
1 answer
1 answer