First, you convert 20 percent into a decimal, by moving it to the left twice. 20% = .20 Then, you multiply 24 by .20 24 x .20 = 4.8 20 percent off 24 is 4.8. Hope I helped!

This is actually quite simple to do. Instead of taking 5 percent, 20 percent, and 45 percent on, reverse the action by adding 5 percent, 20 percent, and 45 percent to the value. 50 * (1.05) * (1.20) * (1.45) You'll have your answer.