What is the fixed charge for the user who had a tariff of 11.30?
create table table_25479607_3 (fixed_charge___rs__kwh_ varchar, tariff___rs__kwh_ varchar, PRIMARY KEY (fixed_charge___rs__kwh_))
select fixed_charge___rs__kwh_ from table_25479607_3 where tariff___rs__kwh_ = "11.30"