đọc đoạn trích từ một bài báo sau và làm theo yêu cầu . " theo báo cáo của Tổng công ty cấp nước Sài Gòn ( Sawaco ) , tỷ lệ thất thoát nước máy trên địa bàn thành phố hồ chí minh tính đến cuối năm 2019 là 25% tức 500000 m3 nước bị thất thoát mỗi ngày " cho rằng lượng nước máy sử dụng trung bình của nguiời dân thành phố trong một tháng ( 30 ngày ) là 4m3 . nếu lượng nước thất thoát giảm con 15 % tức chỉ còn là 300000 m3 nước bị thất thoát mỗi ngày thì có thêm bao nhiêu người dân có thể được cung cấp nước từ nhà máy nước thành phố ?

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