Practicing Success
If a : (b + c) = 3 : 5 and b : (c + a) = 9 : 11, then c : (a + b) = ? |
5 : 3 7 : 33 29 : 11 8 : 7 |
7 : 33 |
In these type of questions always note that the total amount/ratio must be same in all conditions. ⇒ A : (B + C) = 3 : 5 = 8(total) ⇒ B : (C + A) = 9 : 11 = 20 (total) make the total equal, ⇒ A : (B + C) = 15 : 25 = 40 (total) ⇒ B : (A + C) = 18 : 22 = 40 (total) Therefore, A = 15, B = 18 & C = 40 -(15 +18) =7 A : B : C 15 : 18 : 7 = 40 Here, ⇒ C : (A + B) = 7 : 33 |