the initial price of an article is rs . 4000 which increases 40 % increse in its price in the first year , a 20 % decrease in the second year and a 20 % increase in the next year . what is the final price of the article ?
"the initial price of the article is rs . 4000 . in the 1 st year , price of the article = 4000 + 1600 = rs . 5600 . in the 2 nd year , price = 5600 - 20 % of 5600 = 5600 - 1120 = rs . 4480 . in the 3 rd year , price = 4480 + 10 % of 4480 = 4480 + 448 = rs . 4928 required price = = rs . 4928 . answer : d"
add(subtract(4000, divide(multiply(4000, 20), const_100)), divide(multiply(subtract(4000, divide(multiply(4000, 20), const_100)), 20), const_100))