1.

If a ∶ b = 5 ∶ 3, then (8a – 5b) ∶ (8a + 5b) is equal to∶

A. 5 ∶ 11
B. 2 ∶ 5
C. 3 ∶ 11
D. 3 ∶ 13
Answer» B. 2 ∶ 5


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