a shopkeeper buys two articles for rs . 1000 each and then sells them , making 40 % profit on the first article and 40 % loss on second article . find the net profit or loss percent ?
"profit on first article = 40 % of 1000 = 400 . this is equal to the loss he makes on the second article . that , is he makes neither profit nor loss . answer : d"
multiply(divide(multiply(subtract(add(multiply(divide(const_100, subtract(const_100, 40)), 1000), multiply(divide(const_100, add(const_100, 40)), 1000)), add(1000, 1000)), const_100), add(multiply(divide(const_100, subtract(const_100, 40)), 1000), multiply(divide(const_100, add(const_100, 40)), 1000))), const_100)