Question

last week i could by pound od coffee for 12.80. this week it is on sale and i can get a 15% discount. how much will 2 3/4 pounds cost more

Answer 1

Input data

Last week

Coffee for $12.80

Current week

15 % Discount

How cost 2 3/4 pounds

Procedure

The total cost of coffee would be

`2(3)/(4)\cdot12.80=35.2`

Now let's apply the discount

d = discount

`\begin{gathered} d=35.2\cdot15\text{ \%} \\ d=5.28 \end{gathered}`

The final cost would be

`\begin{gathered} C=35.2-5.28 \\ C=29.92 \end{gathered}`

The tatoal cost would be $ 29.92