(1)(60-50)/50=20%
(2) (60-50)/60=16.7%
(3) 120-70=50 (70-50)/50=40%
(4) (1800-1500)/1800=16.7%
(5)(250-400*55/1000)/250=91.2%
(1)(60-50)/50=20%
(2) (60-50)/60=16.7%
(3) 120-70=50 (70-50)/50=40%
(4) (1800-1500)/1800=16.7%
(5)(250-400*55/1000)/250=91.2%