alleryWith positive a,b,c,d and a:b=c:d, dividendo gives
A(a−b):c=(c−d):a
B(a−b):b=(c−d):d
C(a−b):a=(c−d):d
D(a+b):b=(c−d):d
Answer & Solution
Correct answer: B. (a−b):b=(c−d):d
Subtracting one from a/b=c/d gives (a−b)/b=(c−d)/d.
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