24.(logical xpln)
assume 100 rs & 30 apples.i.e 3.33/ apple.
for 20 % profit i.e 20 rs, each apple 2 b sold at 4 rs.
but he has to sell it in rs 100 therefore no of apples shud
b reduced.
to earn 20 rs =3.33*(6) approx.
therefore 6 less apples thus 24 apples.