Otto’s local kitchen supply store charges $5.00 for the first knife that you need sharpened. They charge $4.00 for the next 3 knives and $3.00 for any knife after that. If Otto has 9 knives that need to be sharpened, how much will it cost to sharpen his knives?
Use reasoning to answer the following question.
32
Knives 2, 3 & 4 will cost $4.

00 each to sharpen so that’s 3 * 4 = $12.

00.

Knives 5 - 9 will cost $3.

00 each to sharpen so that’s 5 * 3 = $15.

00.

The first knife will cost $5.

00, the next 3 cost $12.

00 and the rest cost $15.

00 for a total of 5 + 12 + 15 = $32.

00.

.

Final answer: 32