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2022-08-09 20:29:10
số gà còn lại sau khi bán là : 150 x 1/5 = 30 ( con gà )
số gà mẹ Hoa bán là :150 - 30 = 120 ( con gà )
Đ/S : 120 con gà
2022-08-09 20:23:34
nửa chu vi 192 : 2 = 96 ( m )
chiều dài : 96 : ( 5 + 3 ) x 5 = 60 ( m )
chiều rộng là : 96 - 60 =36 ( m )
diện tích thửa ruộng là : 36 x 60 = 2160 ( m2 )