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Số sản phẩm dệt theo dự định là:
12 x 15 = 180 sản phẩm
Số ngày hoàn thành kế hoạch sau khi cải tiến là:
180 : 20 = 9 ngày
Hoàn thành sớm hơn dự định số ngày là:
15 - 9 = 6 ngày
Số người cần tới là:
12*10:10=12(người)
=>Cần bổ sung thêm 2 người
Còn lại số ngày là:
\(30-6=24\) ngày
Số công nhân sau khi thêm là:
\(24+8=32\) công nhân
Số ngày để 1 người làm hết công việc còn lại là:
\(24\times24=576\) ngày
Số ngày để 32 công nhân làm hết công việc còn lại là:
\(576:32=18\) ngày
Đội công nhân hoàn thành sớm hơn dự định là:
\(30-\left(18+6\right)=6\) ngày
Nữa chu vi bức tranh :
16,8 : 2 = 8,4 ( m )
Chiều dài bức tranh :
( 8,4 + 3,2 ) : 2 = 5,8 ( m )
Chiều rộng bức tranh :
5,8 - 3,2 = 2,6 ( m )
Diện tích bức tranh :
5,8 x 2,6 = 15,08 ( m2 )
Dùng hết số giấy màu :
15,08 : 1 x 0,75 = 11,31 ( kg )
đ/s : 11,31 kg
11,31 là đúng đấy 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Nếu có 36 bạn thì thời gian hoàn thành sẽ là:
12x24:36=8(ngày)
Bức tranh được hoàn thành sớm hơn dự kiến:
12-8=4(ngày)