What is the total cost of $19.99 with 2% tax?

To get 1% of a number simply divide by 100. So 19.99 / 100 = 0.1999
So 1% of 19.99 = 0.1999
Then multiply by two to get 2%
So 0.1999 * 2 = 0.3998
Then add to the original amount.
0.3998 + 19.99 = 20.3898
(Rounded) = $20.40

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.