4 =10.4zO\rvwm8$tP 36x10.4-8 = 86.4t6\rw7zDxvw8$tP 60-36 = 24t6\rzc,xP 86.4+24 = 3.6z6\rwm8$tP 60x3.6 = 216t6\r|%8$tP 540-216 = 324t6\r:60x[36x 10.4-8- 60-36] =216t6O540-216 = 324t6\r`3.6zwc,xvw?xz|%324t@\r14 . Lwi{@L|.j?wi{|-|8 z?wiwi|-{|8 J¡(z¢@ Lvw\r'z}g?)*.£zww840t@X{@L|@\r`!wi|-{| 8+1+1/3=6z6Lw.£1+1/6+1/8=24/7z6.£zww8¤1/6+1/8*24/7="7,\r,{@L|.40+1/7=280t6@\r15 . ¥¦§¨©ªm7«2¬100N®§¯80«@¥¦°§¨±²³`“ µ¶·¬?)*7·¬1N?¸¹8©\rª 4 «@”§¨±²m(»?¼·¬5 % ,½`¾¥¦8©ª?¿?ÀÁÂjÃÄ8100N@Å`+®§¯Æ8\r$NP\rP`Ç+®§¯Æx N@·¬5%¹7«·I00x5%=5 3N6?¥¦c8È4x5=20 3«6@`¿?ÀÁÉÊ?cr\r¤`100-x x80 +100= 100-5-x x 80 + 20,.\r20x=1400,\rx=70,\r+®§¯Æ7 0 N
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