Brief Exercise 17-5 (Algo) Changes in pension plan assets [LO17-4] Pension plan assets were $460 million at the beginning of the year. The return on plan assets was 5%. At the end of the year, retiree benefits paid by the trustee were $21 million and cash invested in the pension fund was $25 million. What was the amount of the pension plan assets at year-end? Pension plan assets million