(2)( 18+6)/45%= 160/3。
(3) 5000 * 26.15% * 5 * 5% = 326.875 yuan.
2.( 1)3/( 12+3)=20%/。
(2)① Cucumber area: 400 * 30% =120m2, Chinese cabbage area: 400 * 35% =140m2;
② The area of rape and green onion is 400-120-140 =140m2;
③ The yield of cucumber and Chinese cabbage is 8 * (120+140) = 2080 kg.
3.480÷( 1-40%)=800 yuan, 480×80%=384 yuan.
4.3×840÷(4+3+5)×5
=2520÷ 12×5
=2 10×5
= 1050 yuan.
5.2/3÷(2/3+ 1)=2/3÷5/3=2/3×3/5=40%.