10.The ratio ot boy's and girls in a class is 5:3. If 16% of boys and 8% of girls failed in an examination, then find the percentage of passed students. hiective Tune Ouevtione n
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b:g = 5:3
b=5x , g =3x
total students =5x +3x =8x
16% B = 16/100 ×5x = 0.8x
8%g = 8/100 × 3x = 0.24x
total students failed = 0.8x + 0.24x = 1.04x
students not failed
= total students - total students failed
= 8x-1.04x = 6.96x
%of students not failed
= 6.96x /8x ×100 = 87%
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