Respuesta :
Answer:
Number of plain cookie boxes sold = 785 boxes
Step-by-step explanation:
Given: Cost of a chocolate chip cookie box = $1.25
Cost of a plain cookie box = $0.75
Total number of boxes sold = 1585
Total cost of the sold boxes = $1588.75
Let, number of plain cookie boxes sold = x
Number of chocolate chip cookie boxes sold = 1585 - x
So,
Total cost = total cost of the sold plain cookie boxes + total cost of the sold chocolate chip cookie boxes
$1588.75 = x ($0.75) + (1585 - x) ($1.25)
1588.75 = 0.75 x + 1981.25 - 1.25 x
0.5 x = 392.5
Therefore,
Number of plain cookie boxes sold: x = 392.5 ÷ 0.5 = 785 boxes
Answer:
785
Step-by-step explanation:
Let the number of the boxes of chocolate chip cookies sold by her = x
Let the number of boxes of plain cookies sold by her = y
So, x + y = 1585 --------------------1
Price of 1 unit of chocolate chip box = $1.25
Price of 1 unit of plain cookie box = $0.75
Thus,
1.25x + 0.75y = 1588.75 -----------------2
Solving 1 and 2 as:
y = 1585 - x
Putting in 2 , we get that:
1.25x + 0.75(1585 - x) = 1588.75
x = 800
y = 785
Plain boxes = 785
