4 answers
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150+30=180
I didn't pass the math in elementary school upstairs.
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(150+30)|3=60
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There are 60 tons of flour.
Column: (150+30) 3 60
Check: 60 3 180;180-150=30。
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Let the flour be X, then the relationship between flour and rice is 3X-30=150, so that X is equal to 60
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