If the number of half dollars is H, then the number of quarters is (53-H), and the money equation is 50*H + 25*(53-H) = 2050 cents, 50H + 25*53 - 25H = 2050, 25H = 2050 - 25*53 ====> H == 29. ANSWER. 29 half dollar coins and the rest, 53-29 = 24 quarters.