If $$\frac{{3a + 5b}}{{3a - 5b}} = 5,$$ then a : b is equal to?
A. 2 : 1
B. 2 : 3
C. 1 : 3
D. 5 : 2
Answer: Option D
Solution (By Examveda Team)
$$\eqalign{ & \frac{{3a + 5b}}{{3a - 5b}} = 5 \cr & \Rightarrow 3a + 5b = 15a - 25b \cr & \Rightarrow 12a = 30b \cr & \Rightarrow 2a = 5b \cr & a:b \cr & 5:2 \cr} $$This Question Belongs to Arithmetic Ability >> Algebra
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