160℅=160/100=(160÷20)/(100÷20)=8/5
40℅=40/100=(40÷20)/(100÷20)=2/5
12.5℅=12.5/100=(12.5÷25)/(100÷25)=0.5/4=(0.5×2)/(4×2)=1/8
0.5℅=(0.5×2)/(100×2)=1/200
160℅=160/100=(160÷20)/(100÷20)=8/5
40℅=40/100=(40÷20)/(100÷20)=2/5
12.5℅=12.5/100=(12.5÷25)/(100÷25)=0.5/4=(0.5×2)/(4×2)=1/8
0.5℅=(0.5×2)/(100×2)=1/200