数学题:化肥厂计划用15天生产化肥4500吨
- 时间:2020-06-05 20:41:20
- 分类:数学世界
- 阅读:79 次
数学题:化肥厂计划用15天生产化肥4500吨,钱5天平均每天生产340吨,后又提高了产量,结果提前3天就完了工,后几天平均每天生产化肥多少吨?(用方程解)
数学题解答:设后几天每天生产x吨。
340×5 + (15-5-3)x = 4500
1700 + 7x = 4500
7x = 2800
x=400
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