1 ,60÷(1+1/5)=60×5/6=50(朵)
2,60÷(1/3)=180(朵)
3,60÷(1-1/6)=72(朵)
4,60+60×2/3=100(朵)
5,60-60×1/6=50(朵)
6,60×7/10=42(朵)
鸭:480÷(1+1/8)共:480÷(1+1/8)+480
1 ,60÷(1+1/5)=60×5/6=50(朵)
2,60÷(1/3)=180(朵)
3,60÷(1-1/6)=72(朵)
4,60+60×2/3=100(朵)
5,60-60×1/6=50(朵)
6,60×7/10=42(朵)
鸭:480÷(1+1/8)共:480÷(1+1/8)+480