Believe the mobile phone which Went on sale in January cost 2400 rubles. In November it began to cost 1200 rubles. By how many percent did the price of the mobile phone during the period from January to November fall? % x=1200:2400=0.5x=0.5x100=50

of x=1200:2400=0.5 x=0.5x100=50 Well elementary task. Why you doubt Everything correctly. of x=1200:2400=0.5 x=0.5x100=50
Answer add