80 over 100 is 0.8.
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80/100 = 130/X --> 80*x = 100*130 --> 80x = 13,000 --> 13,000/80 = x --> x = 162.5
80%% rate:= 60/75 * 100%= 0.80 * 100%= 80%
% rate = 20%=16/80* 100%= 0.2* 100%= 20%
Divide both numbers by their HCF. So 80/100 = 4/5
It is: 48/80 times 100 = 60%