a man sold 18 toys for rs . 23100 , gaining thereby the cost price of 3 toy find the cost price of a toy
"let the cost of one toy = x . then , cost of 18 toys = 18 x . gain = 3 x . sp of 18 toys = rs . 23100 . gain = sp â € “ cp 3 x = 23100 â € “ 18 x 21 x = 23100 x = rs . 1100 . answer : option e"
divide(23100, add(18, 3))