First, you need to figure out what 30% of 79.99 is. To to this you need to multiply:
79.99 x 0.3 = 23.997, which you can round to 24.00
Now the problem has become a very simple subtraction problem:
79.99 - 24.00 = 55.99
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"Percent" = "of 100". So 30 is 30% of 100.
7999
18 percent of 30 is 5.4
20 percent is lower than 30 percent.
what is the answer of 30 percent of 50