Tom has Rs. 3x²y and he was given another Rs. 9x²y by his mother. Then out of the total amount of money that he had, he used some to buy a toy car of Rs. 7x²y. How much money is left with him?

Here, Tom's money = Rs. 3x²y Amount given by his mother = Rs. 9x²y Total amount of money = Rs. 12x²y So, amount of money left with him = Total money – Price of toy                                                    = Rs. 12x²y – Rs. 7x²y                                                    = Rs. 5x²y Therefore, option (1) is correct.