36/100x + 2/3 * 36/100x + x =480
36/100х(1+2/3)+х=480 36/100х*5/3+х=480 12/20х + х=480 3/5х+х=480 8/5х=480 х=480/8/5 х=480*5/8 х=60*5 х=300