Your employer have 600 business cards and you give away 280 of them. to the nearest hundredths what percent of the cards is left.

First, let's determine the number of business cards left:

600 - 280 = 320 business cards left.

"Percent" or "%" means "out of 100" or "per 100", Therefore x% can be written as

x / 100

We can then write:

x / 100 = 320 / 600

100 * x / 100 = 100 * 320/600

100 * x / 100 = 32000 / 600

x = 320 / 6

x = 53.33 rounded to the nearest hundredth.

53.33 % of business cards are left.