Question

Each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80!

Answer 1

Answer:

$1.15

Step-by-step explanation:

Let the current price of the cookie be C whilst the normal price is c.

From the information we can deduce two equations.

Firstly, since they are $0.75 less than usual:

C+$0.75=c

Secondly, since seven cost $2.80

7C=$2.80

We can simplify this equation by dividng by 7

C=$0.40

Now combine the equations via substitution this value above into the first equation

$0.40 + $0.75= c

c= $1.15

Therefore the normal price is $1.15