wieghtage of sa2 marks (correct info  acc to cbse   plzz)
 

term 1.fa1(10) + fa2(10) + sa 1(20) = 40%
term 2. fa3(10) + fa4(10) + sa 2 (40) = 60%

total= 40 + 60 = 100

therefore SA2 40%