1) (24+60)÷(1-2/5)
=84÷3/5
=140页
2) 450÷(30%-25%)
=450÷5%
=9000个
3) 40×3/5÷48%
=24÷48%
=50千克
4)540÷(1-25%)
=540÷75%
=720吨
5) 36×(1-4/9)÷(1-6/11)×6/11-36×4/9
=20÷5/11×6/11-16
=24-16
=8人
1) (24+60)÷(1-2/5)
=84÷3/5
=140页
2) 450÷(30%-25%)
=450÷5%
=9000个
3) 40×3/5÷48%
=24÷48%
=50千克
4)540÷(1-25%)
=540÷75%
=720吨
5) 36×(1-4/9)÷(1-6/11)×6/11-36×4/9
=20÷5/11×6/11-16
=24-16
=8人