in an examination , 25 % of total students failed in hindi , 35 % failed in english and 40 % in both . the percentage of these who passed in both the subjects is :
"pass percentage = 100 - ( 25 + 35 - 40 ) = 100 - 20 = 80 answer : d"
subtract(const_100, subtract(add(25, 35), 40))