The cost of the phone was 400 manat. The price of the phone was increased by 25% and then reduced by 50%. How much manat cheaper phone was sold compared to the original price?​

400 - 100%

х - 125% (100+25)

х = 400×125 : 100 = 500

500 - 100%

х - 50% (100-50)

х = 500*50 : 100= 250

In comparison with the original price, the telephone wad sold by 150 manat cheaper. (400-250=150)