Answer:
He sold 88 plain cakes and 8 decorated cakes.
Step-by-step explanation:
No question, but I assume the question is "How many plain and how many decorated cakes did John sell during the day?"
Based on the question, we can create 2 equations.
Let x be the number of plain cakes sold, and y be the number of decorated cakes.
1. He had 100 cakes to start with, and sold 96, because he's left with 4.
So, we have x + y = 96
2. Based on the prices he sells his cakes, and because he sold some plain cakes and some decorated cakes, for a total of $800, we can make this equation:
8x + 12y = 800
Now, if from the first equation we isolate x, we get x = 96 - y
Let's put that value in the second equation:
8 (96 - y) + 12y = 800
768 - 8y + 12y = 800
4y = 32
y = 8
So, John sold 8 decorated cakes.
Placing that in the first equation, we get:
x + 8 = 96
x = 88 ---- he sold 88 plain cakes.
Let's verify the second equation:
8 * 88 + 12 * 8 = 800
704 + 96 = 800
800 = 800.
Confirmed.
Answer:
He sold 88 plain cakes and he decorated 8 cakes.
Step-by-step explanation:
