I tested it using the purchase price if 23.455, when doing it Iuse 0.005 to help with the rounding issue however it is not rounding right when I truncate it

For example

The Delmar store has a tax rate of 7.25% which should show a tax of 1.7004875. Rounding that it would be 1.70, even to account for the rounding in C with 0.005 it should still truncate to 1.70 however it is showing 1.71. What am I doing wrong?


Here is the program I have at the moment

Code:
#include <stdio.h>
#include <windows.h>


int main (void) //Main program function
{
    
    char    *stores[3] = {"Del Mar", "Encinitas", "La Jolla"};
    float    taxPercent[3]={7.25, 7.5, 7.75}; // Tax variable for all three stores
    float    price; //float variable for the price
    
    do {
        printf("\t\tKudler Fine Foods Tax Calculator\n\n");  // prints header 
        printf("Please enter the amount of your purchase: ");
        scanf("%f", &price);
        if (0.0 > price) {
                          printf("\n\nPurchase amount must be positive");
                          sleep(2000);
                          system("cls");
                          }
         } while(price < 0.0);
         
    float newPrice = price + 0.005;     
        
    float taxTotal[3] = {price * (taxPercent[0]/100), price * (taxPercent[1]/100), price * (taxPercent[2]/100)}; //calculates the total for each store
    float totalPrice[3] = {price + taxTotal[0], price + taxTotal[1], price + taxTotal[2]};
    printf("\n\n\t%s store\n", stores[0]); //prints tax information for Del Mar
    printf("\n\tPurchase price: %.2f", newPrice);
    printf("\n\tSales tax: %.2f", taxTotal[0] + 0.005); 
    printf("\n\tTotal Purchase Price: %.2f", totalPrice[0] + 0.005);
    
       printf("\n\n\t%s store\n", stores[1]); //prints tax information for Del Mar
    printf("\n\tPurchase price: %.2f", newPrice);
    printf("\n\tSales tax: %.2f", taxTotal[1] + 0.005); 
    printf("\n\tTotal Price: %.2f", totalPrice[1] + 0.005);
    
       printf("\n\n\t%s store\n", stores[2]); //prints tax information for Del Mar
    printf("\n\tPurchase price: %.2f", newPrice);
    printf("\n\tSales tax: %.2f", taxTotal[2] + 0.005); 
    printf("\n\tTotal Purchase Price: %.2f", totalPrice[2] + 0.005);
        
    getch(); // waits for user to press a key

    return 0; // return of int main()

} // end main