If an electricity bill is paid before due date, one gets a reduction of 4% on the amount of the bill. By paying the bill before due date a person got a reduction of Rs. 13. The amount of his electricity bill was:
let's say amount of electricity bill is 100
so reduction will be 4
hence when reduction is 4 amount of electricity bill is 100
now when reduction is 13 amount of electricity bill will be $$\frac{100}{4}\times 13$$
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