125 pounds decreased by 4%

Find the new amount

125x. 04=5 and 125-5=120

You multiply 4 times 125 to get 500 and then divide it by 100 to get 5. This tells you that 5 is the 4% of 125. Now decreasing is subtraction so you do 125 minus 5 which gives you 120 and that's your answer.