Grade 3: 360 dollars
Grade 4: 276 dollars
Grade 2: 164 dollars
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If Grade 3 has 360 dollars, but has 84 more than Grade 4 then subtract them like
360-84=276
276 is the amount that Grade 4 has, if Grade 4 has more than Grade 2 by 112 then subtract them like:
276-112= 164
Answer: 164
Summary: Grade 2 will have the least amount of dollars, but their total will be 164