Let's start by rounding the prices of the 5 items into whole numbers. We will round any decimal greater that .50 up to 1.0 and any decimal less than .50 down to 0.
6.67 would round to 7.00
4.53 would round to 5.00
17.90 would round to 18.00
3.08 would round to 3.00
20.53 would round to 21.00
We then add the rounded values for the solution.
7+5+18+3+21=54
The total cost is about $54.00
