John buys 8 packs of cookies at the grocery store. The cookies are on sale for 50 cents off per pack. He spends $20. Which equation can be used to find the original cost of a box of cookies, c?(1 point) Responses 8(c+0.50)=20 8 times open paren c plus 0 point 5 0 close paren is equal to 20 8c−0.50=20 8 c minus 0 point 5 0 is equal to 20 8(c−0.50)=20 8 times open paren c minus 0 point 5 0 close paren is equal to 20 8−0.50c=20
The equation that can be used to find the original cost of a box of cookies, c, is:
8(c − 0.50) = 20
To solve this problem, we need to set up an equation based on the given information. Let's break down the information given:
John buys 8 packs of cookies at the grocery store, and each pack is on sale for 50 cents off.
Let's assume the original cost of a pack of cookies is "c" dollars.
So, the sale price of each pack is (c - 0.50) dollars.
John spends a total of $20 for 8 packs.
Now, we can set up the equation:
8(c - 0.50) = 20
The equation represents 8 packs, each at the sale price of (c - 0.50), equaling the total amount spent, which is $20.
Therefore, the correct equation is: 8(c - 0.50) = 20.