Question

英语数学问题，请大家帮忙，谢谢！

dilute 35 gallons of 40% acid with 7 gallons of water . what is the amount and trength of the mixture ? 请大家写步骤！谢谢

Answer 1

用7加仑水稀释35加仑40%的酸，混合物的数量和浓度是多少？
acid:35*40/100=14
water=35-14+7=26
amount=35+7=42
strength=14/42*100=33.33%

amount=42
strenght=33.33%

Answer 2

计算纯酸35x0.4=14
总液体量35+7=42
稀释后含酸量14/42=33.3%

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