單項選擇題
A.60% B.40% C.20% D.50%
A.855 B.1140 C.900 D.1000
A.32.4 B.54.0 C.75.6 D.90.0
A.89322.40 B.101100 C.150368.42 D.260400
A.1938 B.1862 C.2058 D.2142