/ / / - https://huntjob.taobao/ 2015 60 / / offer / / / - https://huntjob.taobao/ 1 A B C D B E 100 91 A B C 95 C D 94 A E 96 D A.96 B.98 C.97 D.99 C A B C 95 B C D 94 96 A D 3 D A 98 99 A 100 BD D D E 99 B C 95 3 99 186 B C 91 A C 2 5 1/3 3 1/4 A.6 B.20/3 C.7 D.22/3 B 1/15 1/12 = 15 12 60 4 5 9 60/9 20/3 B 1 1 1/15 1/12 1/15+1/12 B 3 1.5 0.5 16 A.15 B.17 C.19 D.21 B 1 16 1.5 0.5 17 B 4 20 30 10 A.15 B.16 C.18 D.25 B 60 3 2 10 5 30 30 30 16 16 4 160 100 A.3980 / / offer / / / - https://huntjob.taobao/ B.3560 C.3270 D.3840 D 16 4=4 = 4 =4 2 8 4 8=32 160+32 15 100=3840 D 6 540 25 6 ? A.15 B.20 C.25 D.30 B X 540 25X 6=540 15X X=20( ) B 1080 25+15=40 7 A 1080 15 40=480 7 7 B 1080 20 40=280 7 C 1080 40 25 40=80 D 1080 30 40 0 B 25 / 25 =25 B 25=625 540 0 C D 25 20=500 15 20=300 240 6 B 7 67.1 10% ( ) A.51.2 B.54.9 C.61 D.62.5 C X 2 67.1 X =67.1 3 0.9X X=61 C 8 3 5 1 5 3 A.1/25 B.1/81 C.1/125 D.1/243 A =5 5 5 5 =1/25 5 125 9 4 6 2 A.3 B.4 C.5 / / offer / / / - https://huntjob.taobao/ D.6 B + 4 6 2 12 =12/4=3 =12/6=2 + =12/2=6 =1 =12/(2+1)=4 B 10 10 10 20 40 10 7.5 20 20 5 A.2.75 B.2 C.3 D.4.5 A 40 10 10% 10 7.5% (40-20) 5% 2.75 A 11. B B 12. A B C D A 13. / / offer / / / - https://huntjob.taobao/ D 45 A C 45 B D 14. A. ACG B. BDH C. ABH D. EGH C D A B C CD A B E G C B 15. 1 2 3 C / / offer