If (a + b) : c = 6 : 7 , (b + c) : a = 11 : 2, then (a + c) : b = ?

5 : 3 7 : 2 9 : 4 4 : 9

9 : 4

In these type of questions always note that the total amount/ratio must be same in all conditions. ⇒ (a + b) : c = 6 : 7  = 13 (total) ⇒ (b + c) : a = 11 : 2 = 13 (total) total equal is already equal, Therefore, a = 2, c = 7 & b = 13 -(2 + 7) = 4 Here, ⇒ (a + c) : b = 9 : 4