A man sold 18 toys for Rs. 21000, gaining thereby the cost price of 3 toy find the cost price of a toy
Choose the correct choice from the following choices
A) s . 600	B) s . 800	C) s . 500	D) s . 900	E) s . 1000

Rationale: "let the cost of one toy = x . then , cost of 18 toys = 18 x . gain = 3 x . sp of 18 toys = rs . 21000 . gain = sp â € “ cp 3 x = 21000 â € “ 18 x 21 x = 21000 x = rs . 1000 . answer : option e"
Answer: E