Question 3) As soon as their first child is born, a couple wants to start a trust fund they will pay into on a yearly basis until their child reaches the age of 18. Once their child reaches 18, the child would be able to withdraw 20 000 Pbr for years 18 through 21. If the interest rate is 4%, what amount does the couple need to invest each year for 18 years to have enough money in the trust fund to meet the four-year payout amounts? X=? 'x x X 19 20 21 18 0 1 2 ('AYA YA A=20 000 Pbr