a) 8 : a = 8 : b
b) a : 16 = 6 : 4
c) a : 8 = b : 8
d) 32 : a = b : 2
Answer: d
Explanation: A = 8 : a = 8 : b ⇒ 8a = 8b ⇒ a = b.
B = a : 16 = b : 4 ⇒ 4a = 16b ⇒ a = 4b
C = a : 8 = b : 8 ⇒ 8a = 8b ⇒ b = a
D = 32 : a = b : 2 ⇒ ab =64
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