CREATE TABLE table_name_20 (working_tax_credit VARCHAR, occupational_pensions VARCHAR, employment___salaries_ VARCHAR, _wages_ VARCHAR)

Employment ( salaries & wages) of 64%, and a Occupational pensions of 6% has what working tax credit?
SELECT working_tax_credit FROM table_name_20 WHERE employment___salaries_ & _wages_ = "64%" AND occupational_pensions = "6%"
SELECT "working_tax_credit" FROM "table_name_20" WHERE "6%" = "occupational_pensions" AND "64%" = "employment___salaries_" & "_wages_"