28.8 I hope this helps.
Answer:
28.8 acres
Explanation:
total percentage = 100%
% used for corn = 100% - (40%+20%+10%)
= 100% - 70% = 30%
if total size of land is 96 acres,
then acres used for corn = 30% of 96acres
= 30/100 x 96
= 0.3 x 96 = 28.8 acres
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