Respuesta :
Answer:
10
Step-by-step explanation:
50 plus 10 windows by 2 dollars will give you 70 dollars.
20 plus 10 Windows by 5 dollars give you 70 dollars
answer: 10 windows
explanation: write and solve an equation.
50 + 2x = 20 + 5x
30 = 3x
10 = x
explanation: write and solve an equation.
50 + 2x = 20 + 5x
30 = 3x
10 = x