Hello there!
You expect to sell 100% - 20% = 80% of many coffee sales.
0.80 * 1500 = 1200
Your answer is 1200 cups of coffee.
Hope I helped!
Let me know if you need anything else!
~ Zoe
X + 5 + 11x = 12x + y
Simplify: 12x + 5 = 12x + y (We are adding x and 11x on the left side)
Subtract 12x from each side makes each zero.
5 = y
So we can plug in and test. I'm picking two random numbers to plug in for x. 10, and 82
x = 10, y = 5
10 + 5 + 11(10) = 12(10) + 5
125 = 125
x = 82, y = 5
82 + 5 + 11(82) = 12(82) + 5
989 = 989
So we verified y = 5
Answer: 70
90+20=110
180-110=70
I hope this is good enough:
