Answer:
y = 40 x = 80
Step-by-step explanation:
520 = 3.25x + 6.5y x+y=120
x+y=120
x = 120-y
520 = 3.25(120-y)+6.5y
520 = 390-3.25y+6.5y
520 = 390+3.25y
130=3.25y
Divide each side by 3.25
40 = y
x = 120-y
x = 120-(40)
x = 80
Answer:
Variable Definitions:
Each taco sells for $3.25, so xx tacos will bring in 3.25x3.25x dollars. Each burrito sells for $6.50, so yy burritos will bring in 6.50y6.50y dollars. Therefore, the total amount of revenue 3.25x+6.50y3.25x+6.50y equals \$520:$520:
3.25x+6.50y=520
3.25x+6.50y=520
Since a total of 120 tacos and burritos were sold, we know x+yx+y must equal 120.120.
x+y=120
x+y=120
Write System of Equations:
3.25x+6.50y=
3.25x+6.50y=
\,\,520
520
x+y=
x+y=
\,\,120
120
Solve for y in each equation
3.25x+6.50y=520
6.50y=−3.25x+520
6.50
6.50y
=
6.50
−3.25x+520
y=−
2
1
x+80
x+y=120
y=−x+120
let x = the number of tacos sold
let y = the number of burritos sold
(80, 40)
The x variable represents the number of tacos sold and the y variable represents the number of burritos sold. Since the lines intersect at the point (80,40) we can say:
There were 80 tacos sold and 40 burritos sold.
Step-by-step explanation:
