1\r1 15\r-\r8\rs\r27-K\r0 5 4 4\r:x\r0.5x=0.5\r28-K X=1\r \r1\rx=9\r28-2 5\r\ 10 ] A 12].\rmn:\r(x +25):2.4=16:1.2\r1.2(x +25)=38.4\r/25= 32\rx=7\r28-3\r5.2 D(=40 : 3\r40x=15.6\r2 8 - 4 x = 0 3 9\r2 3 4 \r(16.12) x 12-(16*12)x12-5-2-12X12+2\r=336-168-72\r=336-240\r29-1=96(stu)\r6 ` a w A 2 D'A 10\r30-1.\rx n y z D A 5 D'A 2 1 \r32-u 2880^3200xl00%=90%\r\ 1 1 ] A 1 2 ].\r33-1\r1??3 :4 : 5\r :8x14+7\r=112+7\r“ 6 6\n \r34-17 89:6;7< = 1> ? 8@ g\r:ABa+9+26ftCDEFG 0 , AHaIB5 ;\rJKEL2 ,NOKEFG 1 , P2+b+2CQRB1 1 ,A H ,bB7 ;\rAB11SJTEL1 , AHcRB4 .\rAHa bc=474\r35-17 UEFabc 474 .\r36-K V WXCYZ[?F 11\.\r\ 1 2 ] A 1 2 ]
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