ÒÓ 2407.\r147. *ÔÕÅÈÖ×ØËÙ4507ÚÛ2 ¶«ÒÓ 1807Ü:ÝWÖ\rÞßÚÛàác¶. $9_âI%\rIãÖÞßÚÛàáx ¶.\r180 450\r2 X\rF 7 9 G H 8 1 G.\r180x=2X450\r2x450\rx = 180\rx=5\r&ÖÞßÚÛàá5 ¶.\r148. *äåæÈyç×Ø?çèé궫24715¶Þßëìíî,\rÏfðñÓ 2 5 % ,ìí9Ó¶ $9_âI%\rIãìí9Ó x ¶\r24X 1 - 25% x=24X15\r18x=24X15\rx=20\r&ìí9Ó 20¶.\r1 4 9 . òóó×*Ô¶ÇÅÈÖèôõöÇ.è÷Å궫9072 ¶Þß.ì\ríøùúÇê¶ûD«607àá¶ìíÖ $9_âIüýþ%\rIãàáx ¶ìíÖ\r60x=90X2\rx=3\r&àá3 ¶ìíÖ.\r150. *ÿ 0@P`p4800?\nP?p2\r3 , ??0@P\r\r2+3=5\r48004-2=2400 ?\r2400x2 X 2400x31\r=960X 1440\r= 1382400 ?\r\r?@Pp1382400?.\r 8 0 8 1 .\r 8 1 8 1