Jawapan

  • Pengguna Brainly
2016-01-05T22:11:47+08:00
320 × ? = ( 320 - ? = 240 ) 320 + 240 = 560 320 × ? = 560 320 / 560 = 4 / 7 = 4 / 7 × 100% = 0.57% decrease