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
Choose the correct option.
A) 60  B) 50  C) 66  D) 54  E) None
Sol.   Let the total original sale be Rs. 100. Then, original number of visitors = 100.   New number of visitors = 120 / 0.75= 
<gadget id="calculator">120 / 0.75</gadget>
<output>160</output>
160.   ∴ Increase%= 60%.   60nswer 60
<result>A</result>
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