Maximum points which is 100% = 60 points
100% = 60
x% = 40 -->
60x = 4000
6x = 400
x = 66,66 % i.e. bronze (because bronze is: 60-69%)
100% = 60
x% = 46 -->
60x = 4600
6x = 460
x = 76,66 % i.e silver (because silver is: 70-79%)
100% = 60
x% = 49 -->
60x = 4900
x = 81,66 % i.e. gold (because gold is 80% and more, which is 80% till 100%)