entry fee in an examination was re . 1 . later , this was reduced by 25 % which increased the sale by 20 % . the percentage increase in the number of visitors is
sol . let the total original sale be rs . 100 . then , original number of visitors = 100 . new number of visitors = 120 / 0.75 = 160 . ∴ increase % = 60 % . answer a
subtract(divide(add(divide(multiply(20, const_100), const_100), const_100), subtract(const_1, divide(25, const_100))), const_100)