X + 0.6x + 2/3x = 680

Question

X + 0.6x + 2/3x = 680

Answer 1

...

х + 6/10х +2/3х=680

30/30х + 18/30х + 20/30х = 680

68/30 х =680

х = 680 : 68/30

х = 680/1 * 30/68

х = 10/1 * 30/1

х = 10 * 30

х = 300