rakesh credits 15 % of his salary in his fixed deposit account and spends 30 % of the remaining amount on groceries . if the cash in hand is rs . 2380 , what is his salary ?
explanation : let salary be rs . x . then , x - 15 % of x - 30 % of 85 % of x = 2380 or x - 15 x / 100 − 30 × 85 × x / 100 × 100 = 2380 or 200 x - 30 x - 51 x = 2380 × 2002380 × 200 or 119 x = 2380 × 2002380 × 200 or x 2380 × 200 / 119 = 4000 correct option : b
divide(2380, multiply(divide(subtract(const_100, 15), const_100), divide(subtract(const_100, 30), const_100)))