A. x = 20, y = 20
B. x = 20, y = 40
C. x = 20, y = 80
D. Cannot be determined
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A. 24
B. 36
C. 48
D. None of these
A. 24000
B. 23000
C. 22000
D. 25000
A. 1:2
B. 1:4
C. 1:8
D. 2:1
A. 1:2
B. 1:4
C. 2:1
D. 4:1
A. 3:4
B. 9:16
C. 1:8
D. 4:3
A. 1:64
B. 1:8
C. 1:4
D. 8:1
