Time Value of Money

Jannah is planning to visit her friends in London in three-year time from now. She needs a total of RM30,000 for that purpose. She has deposited RM12,000 in her savings account which pays 4% interest annually. Her parents promised to finance the balance by putting a sum of money in an investment earning 15% annually. How much do you think her parents must deposit now in order for her to have a total of RM30,000 at the end of year three?