50 students eat 1400kg of rice in 14 days. if after 7 days 20 more students came in and 420kg of rice are added, then how many days will the rice last.
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Answer: Each student consumes 2kg rice per day.
At 7th day 700 kg rice is left from 1400kgs.
70 students will consume 700kg rice in 5days.
Therefore, After 7days rice will last 5 more days
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