Question
Cindy had some rice flour in a container. She used 312 kg of the rice flour in the morning. She added 2 kg of rice flour into the same container in the afternoon. There was 5110 kg of rice flour in the container in the end. How much rice flour did Cindy have at first? Express your answer in its simplest form.
4 m

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Cindy had some rice flour in a container. She used 312 kg of the rice flour in the morning. She added 2 kg of rice flour into the same container in the afternoon. There was 5110 kg of rice flour in the container in the end. How much rice flour did Cindy have at first? Express your answer in its simplest form.