in an examination , 25 % of total students failed in hindi , 40 % failed in english and 35 % in both . the percentage of these who passed in both the subjects is :
"pass percentage = 100 - ( 25 + 40 - 35 ) = 100 - 70 = 30 answer : c"
subtract(const_100, subtract(add(25, 40), 35))