the price of a mobile was increased by 25 percent . the new price was then decreased by 10 percent . a single increase of what percent is equivalent to these two successive changes ?
"consider base price - $ 100 25 % increase = 1.25 * 100 = $ 125 then a 10 % decrease on new price = 0.9 * 125 = $ 112.5 so final price of radio - $ 112.5 therefore a 12.5 % increase correct option - e"
multiply(subtract(multiply(divide(add(const_100, 25), const_100), divide(subtract(const_100, 10), const_100)), const_1), const_100)