$${\text{If }}\frac{{3a + 4b}}{{3c + 4d}}{\text{ = }}\frac{{3a - 4b}}{{3c - 4d}}{\text{ then}}$$
A. ab = cd
B. ad = bc
C. ac = bd
D. a = b =c ≠ d
Answer: Option B
Solution (By Examveda Team)
$$\eqalign{ & {\text{According to question,}} \cr & \frac{{3a + 4b}}{{3a - 4b}}{\text{ = }}\frac{{3c + 4d}}{{3c - 4d}} \cr & \Rightarrow \frac{{3a}}{{4b}} = \frac{{3c}}{{4d}} \cr & \Rightarrow ad = bc \cr} $$This Question Belongs to Arithmetic Ability >> Simplification
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