Practicing Success
If 30% of (B-A) - 18% of (B+A) = 0, then the ratio of A:B is equal to: |
4 : 1 1 : 4 4 : 5 5 : 9 |
1 : 4 |
30% (B-A) - 18% (B+A) = 0 30% (B-A) = 18% (B+A) \(\frac{B+A}{B-A}\) = \(\frac{5}{3}\) here B + A = 5 ---- (i) B - A = 3 ----- (ii) 2B = 8 (after adding) B = 4 ------ Putting in equation (i) ⇒ 4 + A = 5 ⇒ A = 1 ⇒ A : B = 1 : 4 |